diff --git a/resources/web/guide/23/23.css b/resources/web/guide/23/23.css
index de2ca9f3e8..35ceff9960 100644
--- a/resources/web/guide/23/23.css
+++ b/resources/web/guide/23/23.css
@@ -148,7 +148,7 @@ input
 	height: calc(100% - 6px);
 	display: flex;
 	align-items: center;
-	border-bottom: 6px solid #00AE42;
+	border-bottom: 6px solid #009688;
 }
 
 #Title div.TitleUnselected
@@ -205,4 +205,4 @@ input
 .CFilament_EditBtn:hover
 {
 	
-}
\ No newline at end of file
+}
diff --git a/src/slic3r/GUI/BBLTopbar.cpp b/src/slic3r/GUI/BBLTopbar.cpp
index ee7c380a69..0bf251d729 100644
--- a/src/slic3r/GUI/BBLTopbar.cpp
+++ b/src/slic3r/GUI/BBLTopbar.cpp
@@ -134,19 +134,19 @@ void BBLTopbarArt::DrawButton(wxDC& dc, wxWindow* wnd, const wxAuiToolBarItem& i
     {
         if (item.GetState() & wxAUI_BUTTON_STATE_PRESSED)
         {
-            dc.SetPen(wxPen(m_highlightColour));
-            dc.SetBrush(wxBrush(m_highlightColour.ChangeLightness(20)));
+            dc.SetPen(wxPen(StateColor::darkModeColorFor("#009688"))); // ORCA
+            dc.SetBrush(wxBrush(StateColor::darkModeColorFor("#009688"))); // ORCA
             dc.DrawRectangle(rect);
         }
         else if ((item.GetState() & wxAUI_BUTTON_STATE_HOVER) || item.IsSticky())
         {
-            dc.SetPen(wxPen(m_highlightColour));
-            dc.SetBrush(wxBrush(m_highlightColour.ChangeLightness(40)));
+            dc.SetPen(wxPen(StateColor::darkModeColorFor("#009688"))); // ORCA
+            dc.SetBrush(wxBrush(StateColor::darkModeColorFor("#009688"))); // ORCA
 
             // draw an even lighter background for checked item hovers (since
             // the hover background is the same color as the check background)
             if (item.GetState() & wxAUI_BUTTON_STATE_CHECKED)
-                dc.SetBrush(wxBrush(m_highlightColour.ChangeLightness(50)));
+                dc.SetBrush(wxBrush(StateColor::darkModeColorFor("#009688"))); // ORCA
 
             dc.DrawRectangle(rect);
         }
@@ -154,8 +154,8 @@ void BBLTopbarArt::DrawButton(wxDC& dc, wxWindow* wnd, const wxAuiToolBarItem& i
         {
             // it's important to put this code in an else statement after the
             // hover, otherwise hovers won't draw properly for checked items
-            dc.SetPen(wxPen(m_highlightColour));
-            dc.SetBrush(wxBrush(m_highlightColour.ChangeLightness(40)));
+            dc.SetPen(wxPen(StateColor::darkModeColorFor("#009688"))); // ORCA
+            dc.SetBrush(wxBrush(StateColor::darkModeColorFor("#009688"))); // ORCA
             dc.DrawRectangle(rect);
         }
     }
diff --git a/src/slic3r/GUI/GCodeViewer.cpp b/src/slic3r/GUI/GCodeViewer.cpp
index e90e59301d..235373db1d 100644
--- a/src/slic3r/GUI/GCodeViewer.cpp
+++ b/src/slic3r/GUI/GCodeViewer.cpp
@@ -547,7 +547,7 @@ void GCodeViewer::SequentialView::GCodeWindow::render(float top, float bottom, f
 
     static const ImVec4 LINE_NUMBER_COLOR    = ImGuiWrapper::COL_ORANGE_LIGHT;
     static const ImVec4 SELECTION_RECT_COLOR = ImGuiWrapper::COL_ORANGE_DARK;
-    static const ImVec4 COMMAND_COLOR        = { 0.8f, 0.8f, 0.0f, 1.0f };
+    static const ImVec4 COMMAND_COLOR        = {0.8f, 0.8f, 0.0f, 1.0f};
     static const ImVec4 PARAMETERS_COLOR     = { 1.0f, 1.0f, 1.0f, 1.0f };
     static const ImVec4 COMMENT_COLOR        = { 0.7f, 0.7f, 0.7f, 1.0f };
 
diff --git a/src/slic3r/GUI/GLCanvas3D.cpp b/src/slic3r/GUI/GLCanvas3D.cpp
index 842cd3fd10..8c00b09dff 100644
--- a/src/slic3r/GUI/GLCanvas3D.cpp
+++ b/src/slic3r/GUI/GLCanvas3D.cpp
@@ -7809,14 +7809,14 @@ void GLCanvas3D::_render_imgui_select_plate_toolbar()
     float window_width = m_sel_plate_toolbar.icon_width + margin_size * 2 + (show_scroll ? 28.0f * f_scale : 20.0f * f_scale);
 
     ImVec4 window_bg = ImVec4(0.82f, 0.82f, 0.82f, 0.5f);
-    ImVec4 button_active = ImVec4(0.12f, 0.56f, 0.92, 1.0f);
+    ImVec4 button_active = ImGuiWrapper::COL_ORCA; // ORCA: Use orca color for selected sliced plate border 
     ImVec4 button_hover = ImVec4(0.67f, 0.67f, 0.67, 1.0f);
     ImVec4 scroll_col = ImVec4(0.77f, 0.77f, 0.77f, 1.0f);
     //ImGui::PushStyleColor(ImGuiCol_Text, ImVec4(0.f, 0.f, 0.f, 1.0f));
     //use white text as the background switch to black
     ImGui::PushStyleColor(ImGuiCol_Text, ImVec4(1.0f, 1.0f, 1.0f, 1.0f));
     ImGui::PushStyleColor(ImGuiCol_WindowBg, window_bg);
-    ImGui::PushStyleColor(ImGuiCol_ScrollbarBg, window_bg);
+    ImGui::PushStyleColor(ImGuiCol_ScrollbarBg, ImVec4(0.f, 0.f, 0.f, 0.f)); // ORCA using background color with opacity creates a second color. This prevents secondary color 
     ImGui::PushStyleColor(ImGuiCol_ScrollbarGrabActive, scroll_col);
     ImGui::PushStyleColor(ImGuiCol_ScrollbarGrabHovered, scroll_col);
     ImGui::PushStyleColor(ImGuiCol_ScrollbarGrab, scroll_col);
@@ -7870,12 +7870,12 @@ void GLCanvas3D::_render_imgui_select_plate_toolbar()
         ImTextureID btn_texture_id;
         if (all_plates_stats_item->slice_state == IMToolbarItem::SliceState::UNSLICED || all_plates_stats_item->slice_state == IMToolbarItem::SliceState::SLICING || all_plates_stats_item->slice_state == IMToolbarItem::SliceState::SLICE_FAILED)
         {
-            text_clr = ImVec4(0, 174.0f / 255.0f, 66.0f / 255.0f, 0.2f);
+            text_clr       = ImVec4(0.0f, 150.f / 255.0f, 136.0f / 255, 0.2f); // ORCA: All plates slicing NOT complete - Text color
             btn_texture_id = (ImTextureID)(intptr_t)(all_plates_stats_item->image_texture_transparent.get_id());
         }
         else
         {
-            text_clr = ImVec4(0, 174.0f / 255.0f, 66.0f / 255.0f, 1);
+            text_clr       = ImGuiWrapper::COL_ORCA; // ORCA: All plates slicing complete - Text color
             btn_texture_id = (ImTextureID)(intptr_t)(all_plates_stats_item->image_texture.get_id());
         }
 
@@ -8398,7 +8398,7 @@ void GLCanvas3D::_render_assemble_info() const
     ImGui::PopFont();
     float margin = 10.0f * get_scale();
     imgui->set_next_window_pos(canvas_w - margin, canvas_h - margin, ImGuiCond_Always, 1.0f, 1.0f);
-    ImGuiWrapper::push_toolbar_style(get_scale());
+    ImGuiWrapper::push_common_window_style(get_scale()); // ORCA use window style for popups with title
     imgui->begin(_L("Assembly Info"), ImGuiWindowFlags_NoCollapse | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoCollapse);
     font->Scale = origScale;
     ImGui::PushFont(font);
@@ -8414,7 +8414,7 @@ void GLCanvas3D::_render_assemble_info() const
         ImGui::Text("%.2f x %.2f x %.2f", size0, size1, size2);
     }
     imgui->end();
-    ImGuiWrapper::pop_toolbar_style();
+    ImGuiWrapper::pop_common_window_style();
 }
 
 #if ENABLE_SHOW_CAMERA_TARGET
diff --git a/src/slic3r/GUI/GLSelectionRectangle.cpp b/src/slic3r/GUI/GLSelectionRectangle.cpp
index 68f9d096eb..7eb5c29143 100644
--- a/src/slic3r/GUI/GLSelectionRectangle.cpp
+++ b/src/slic3r/GUI/GLSelectionRectangle.cpp
@@ -116,7 +116,7 @@ namespace GUI {
             shader->set_uniform("view_model_matrix", Transform3d::Identity());
             shader->set_uniform("projection_matrix", Transform3d::Identity());
 
-            m_rectangle.set_color({0.0f, 1.0f, 0.38f, 1.0f});
+            m_rectangle.set_color(ColorRGBA::ORCA()); // ORCA: use orca color for selection rectangle
             m_rectangle.render();
             shader->stop_using();
         }
diff --git a/src/slic3r/GUI/Gizmos/GLGizmoFdmSupports.cpp b/src/slic3r/GUI/Gizmos/GLGizmoFdmSupports.cpp
index 3a57a895d6..ccf17a7716 100644
--- a/src/slic3r/GUI/Gizmos/GLGizmoFdmSupports.cpp
+++ b/src/slic3r/GUI/Gizmos/GLGizmoFdmSupports.cpp
@@ -291,11 +291,12 @@ void GLGizmoFdmSupports::on_render_input_window(float x, float y, float bottom_l
         if (i != 0) ImGui::SameLine((empty_button_width + m_imgui->scaled(1.75f)) * i + m_imgui->scaled(1.3f));
 
         ImGui::PushStyleVar(ImGuiStyleVar_FrameBorderSize, 0.0);
+		ImGui::PushStyleColor(ImGuiCol_Text, ImVec4(1.f, 1.f, 1.f, 1.f));						// ORCA: Fixes icon rendered without colors while using Light theme
         if (m_current_tool == tool_ids[i]) {
-            ImGui::PushStyleColor(ImGuiCol_Button, m_is_dark_mode ? ImVec4(43 / 255.0f, 64 / 255.0f, 54 / 255.0f, 1.00f) : ImVec4(0.86f, 0.99f, 0.91f, 1.00f)); // r, g, b, a
-            ImGui::PushStyleColor(ImGuiCol_ButtonHovered, m_is_dark_mode ? ImVec4(43 / 255.0f, 64 / 255.0f, 54 / 255.0f, 1.00f) : ImVec4(0.86f, 0.99f, 0.91f, 1.00f));
-            ImGui::PushStyleColor(ImGuiCol_ButtonActive, m_is_dark_mode ? ImVec4(43 / 255.0f, 64 / 255.0f, 54 / 255.0f, 1.00f) : ImVec4(0.86f, 0.99f, 0.91f, 1.00f));
-            ImGui::PushStyleColor(ImGuiCol_Border, ImVec4(0.00f, 0.68f, 0.26f, 1.00f));
+            ImGui::PushStyleColor(ImGuiCol_Button,			ImVec4(0.f, 0.59f, 0.53f, 0.25f));	// ORCA use orca color for selected tool / brush
+            ImGui::PushStyleColor(ImGuiCol_ButtonHovered,	ImVec4(0.f, 0.59f, 0.53f, 0.25f));	// ORCA use orca color for selected tool / brush
+            ImGui::PushStyleColor(ImGuiCol_ButtonActive,	ImVec4(0.f, 0.59f, 0.53f, 0.30f));	// ORCA use orca color for selected tool / brush
+            ImGui::PushStyleColor(ImGuiCol_Border,			ImGuiWrapper::COL_ORCA);			// ORCA use orca color for border on selected tool / brush
             ImGui::PushStyleVar(ImGuiStyleVar_FrameBorderSize, 1.0);
             ImGui::PushStyleVar(ImGuiStyleVar_FrameRounding, 1.0);
         }
@@ -305,6 +306,7 @@ void GLGizmoFdmSupports::on_render_input_window(float x, float y, float bottom_l
             ImGui::PopStyleColor(4);
             ImGui::PopStyleVar(2);
         }
+        ImGui::PopStyleColor(1);
         ImGui::PopStyleVar(1);
 
         if (btn_clicked && m_current_tool != tool_ids[i]) {
diff --git a/src/slic3r/GUI/Gizmos/GLGizmoMmuSegmentation.cpp b/src/slic3r/GUI/Gizmos/GLGizmoMmuSegmentation.cpp
index bd91482f65..727ceebc9b 100644
--- a/src/slic3r/GUI/Gizmos/GLGizmoMmuSegmentation.cpp
+++ b/src/slic3r/GUI/Gizmos/GLGizmoMmuSegmentation.cpp
@@ -470,14 +470,14 @@ void GLGizmoMmuSegmentation::on_render_input_window(float x, float y, float bott
         ImGuiColorEditFlags flags = ImGuiColorEditFlags_NoAlpha | ImGuiColorEditFlags_NoInputs | ImGuiColorEditFlags_NoLabel | ImGuiColorEditFlags_NoPicker | ImGuiColorEditFlags_NoTooltip;
         if (m_selected_extruder_idx != extruder_idx) flags |= ImGuiColorEditFlags_NoBorder;
         #ifdef __APPLE__
-            ImGui::PushStyleColor(ImGuiCol_FrameBg, ImVec4(0.00f, 0.68f, 0.26f, 1.00f));
+            ImGui::PushStyleColor(ImGuiCol_FrameBg, ImGuiWrapper::COL_ORCA); // ORCA use orca color for selected filament border
             ImGui::PushStyleVar(ImGuiStyleVar_FrameBorderSize, 0.0f);
             ImGui::PushStyleVar(ImGuiStyleVar_FrameRounding, 3.0);
             bool color_picked = ImGui::ColorButton(color_label.c_str(), color_vec, flags, button_size);
             ImGui::PopStyleVar(2);
             ImGui::PopStyleColor(1);
         #else
-            ImGui::PushStyleColor(ImGuiCol_FrameBg, ImVec4(0.00f, 0.68f, 0.26f, 1.00f));
+            ImGui::PushStyleColor(ImGuiCol_FrameBg, ImGuiWrapper::COL_ORCA); // ORCA use orca color for selected filament border
             ImGui::PushStyleVar(ImGuiStyleVar_FrameBorderSize, 0.0);
             ImGui::PushStyleVar(ImGuiStyleVar_FrameRounding, 2.0);
             bool color_picked = ImGui::ColorButton(color_label.c_str(), color_vec, flags, button_size);
@@ -519,11 +519,12 @@ void GLGizmoMmuSegmentation::on_render_input_window(float x, float y, float bott
 
         if (i != 0) ImGui::SameLine((empty_button_width + m_imgui->scaled(1.75f)) * i + m_imgui->scaled(1.5f));
         ImGui::PushStyleVar(ImGuiStyleVar_FrameBorderSize, 0.0);
+		ImGui::PushStyleColor(ImGuiCol_Text, ImVec4(1.f, 1.f, 1.f, 1.f));						// ORCA: Fixes icon rendered without colors while using Light theme
         if (m_current_tool == tool_ids[i]) {
-            ImGui::PushStyleColor(ImGuiCol_Button, m_is_dark_mode ? ImVec4(43 / 255.0f, 64 / 255.0f, 54 / 255.0f, 1.00f) : ImVec4(0.86f, 0.99f, 0.91f, 1.00f)); // r, g, b, a
-            ImGui::PushStyleColor(ImGuiCol_ButtonHovered, m_is_dark_mode ? ImVec4(43 / 255.0f, 64 / 255.0f, 54 / 255.0f, 1.00f) : ImVec4(0.86f, 0.99f, 0.91f, 1.00f));
-            ImGui::PushStyleColor(ImGuiCol_ButtonActive, m_is_dark_mode ? ImVec4(43 / 255.0f, 64 / 255.0f, 54 / 255.0f, 1.00f) : ImVec4(0.86f, 0.99f, 0.91f, 1.00f));
-            ImGui::PushStyleColor(ImGuiCol_Border, ImVec4(0.00f, 0.68f, 0.26f, 1.00f));
+            ImGui::PushStyleColor(ImGuiCol_Button,			ImVec4(0.f, 0.59f, 0.53f, 0.25f));	// ORCA use orca color for selected tool / brush
+            ImGui::PushStyleColor(ImGuiCol_ButtonHovered,	ImVec4(0.f, 0.59f, 0.53f, 0.25f));	// ORCA use orca color for selected tool / brush
+            ImGui::PushStyleColor(ImGuiCol_ButtonActive,	ImVec4(0.f, 0.59f, 0.53f, 0.30f));	// ORCA use orca color for selected tool / brush
+            ImGui::PushStyleColor(ImGuiCol_Border,			ImGuiWrapper::COL_ORCA);			// ORCA use orca color for border on selected tool / brush
             ImGui::PushStyleVar(ImGuiStyleVar_FrameBorderSize, 1.0);
             ImGui::PushStyleVar(ImGuiStyleVar_FrameRounding, 1.0);
         }
@@ -533,6 +534,7 @@ void GLGizmoMmuSegmentation::on_render_input_window(float x, float y, float bott
             ImGui::PopStyleColor(4);
             ImGui::PopStyleVar(2);
         }
+        ImGui::PopStyleColor(1);
         ImGui::PopStyleVar(1);
 
         if (btn_clicked && m_current_tool != tool_ids[i]) {
diff --git a/src/slic3r/GUI/Gizmos/GLGizmoSeam.cpp b/src/slic3r/GUI/Gizmos/GLGizmoSeam.cpp
index e534b2b3c1..b2692e9555 100644
--- a/src/slic3r/GUI/Gizmos/GLGizmoSeam.cpp
+++ b/src/slic3r/GUI/Gizmos/GLGizmoSeam.cpp
@@ -244,11 +244,12 @@ void GLGizmoSeam::on_render_input_window(float x, float y, float bottom_limit)
 
         if (i != 0) ImGui::SameLine((empty_button_width + m_imgui->scaled(1.75f)) * i + m_imgui->scaled(1.3f));
         ImGui::PushStyleVar(ImGuiStyleVar_FrameBorderSize, 0.0);
+		ImGui::PushStyleColor(ImGuiCol_Text, ImVec4(1.f, 1.f, 1.f, 1.f));						// ORCA: Fixes icon rendered without colors while using Light theme
         if (m_current_tool == tool_ids[i]) {
-            ImGui::PushStyleColor(ImGuiCol_Button, m_is_dark_mode ? ImVec4(43 / 255.0f, 64 / 255.0f, 54 / 255.0f, 1.00f) : ImVec4(0.86f, 0.99f, 0.91f, 1.00f)); // r, g, b, a
-            ImGui::PushStyleColor(ImGuiCol_ButtonHovered, m_is_dark_mode ? ImVec4(43 / 255.0f, 64 / 255.0f, 54 / 255.0f, 1.00f) : ImVec4(0.86f, 0.99f, 0.91f, 1.00f));
-            ImGui::PushStyleColor(ImGuiCol_ButtonActive, m_is_dark_mode ? ImVec4(43 / 255.0f, 64 / 255.0f, 54 / 255.0f, 1.00f) : ImVec4(0.86f, 0.99f, 0.91f, 1.00f));
-            ImGui::PushStyleColor(ImGuiCol_Border, ImVec4(0.00f, 0.68f, 0.26f, 1.00f));
+            ImGui::PushStyleColor(ImGuiCol_Button,			ImVec4(0.f, 0.59f, 0.53f, 0.25f));	// ORCA use orca color for selected tool / brush
+            ImGui::PushStyleColor(ImGuiCol_ButtonHovered,	ImVec4(0.f, 0.59f, 0.53f, 0.25f));	// ORCA use orca color for selected tool / brush
+            ImGui::PushStyleColor(ImGuiCol_ButtonActive,	ImVec4(0.f, 0.59f, 0.53f, 0.30f));	// ORCA use orca color for selected tool / brush
+            ImGui::PushStyleColor(ImGuiCol_Border,			ImGuiWrapper::COL_ORCA);			// ORCA use orca color for border on selected tool / brush
             ImGui::PushStyleVar(ImGuiStyleVar_FrameBorderSize, 1.0);
             ImGui::PushStyleVar(ImGuiStyleVar_FrameRounding, 1.0);
         }
@@ -258,6 +259,7 @@ void GLGizmoSeam::on_render_input_window(float x, float y, float bottom_limit)
             ImGui::PopStyleColor(4);
             ImGui::PopStyleVar(2);
         }
+        ImGui::PopStyleColor(1);
         ImGui::PopStyleVar(1);
         if (btn_clicked && m_current_tool != tool_ids[i]) {
             m_current_tool = tool_ids[i];
diff --git a/src/slic3r/GUI/Gizmos/GLGizmoSimplify.cpp b/src/slic3r/GUI/Gizmos/GLGizmoSimplify.cpp
index 2fa96de169..0c82aae6ba 100644
--- a/src/slic3r/GUI/Gizmos/GLGizmoSimplify.cpp
+++ b/src/slic3r/GUI/Gizmos/GLGizmoSimplify.cpp
@@ -278,8 +278,8 @@ void GLGizmoSimplify::on_render_input_window(float x, float y, float bottom_limi
     ImGui::PushStyleColor(ImGuiCol_FrameBg, ImVec4(0.81f, 0.81f, 0.81f, 1.00f));
     ImGui::PushStyleColor(ImGuiCol_FrameBgHovered, ImVec4(0.81f, 0.81f, 0.81f, 1.00f));
     ImGui::PushStyleColor(ImGuiCol_FrameBgActive, ImVec4(0.81f, 0.81f, 0.81f, 1.00f));
-    ImGui::PushStyleColor(ImGuiCol_Text, ImVec4(0.00f, 0.68f, 0.26f, 1.00f));
-    ImGui::PushStyleColor(ImGuiCol_SliderGrab, ImVec4(0.00f, 0.68f, 0.26f, 1.00f));
+    ImGui::PushStyleColor(ImGuiCol_Text, ImGuiWrapper::COL_ORCA); // ORCA Use orca color for step slider text
+    ImGui::PushStyleColor(ImGuiCol_SliderGrab, ImGuiWrapper::COL_ORCA); // ORCA Use orca color for step slider thumb
 
     if (m_imgui->bbl_sliderin("##ReductionLevel", &reduction, 0, 4, reduce_captions[reduction].c_str())) {
         if (reduction < 0) reduction = 0;
diff --git a/src/slic3r/GUI/IMSlider.cpp b/src/slic3r/GUI/IMSlider.cpp
index f12cf5aab4..1320e28084 100644
--- a/src/slic3r/GUI/IMSlider.cpp
+++ b/src/slic3r/GUI/IMSlider.cpp
@@ -1073,7 +1073,7 @@ bool IMSlider::render(int canvas_width, int canvas_height)
     ImGui::PushStyleVar(ImGuiStyleVar_::ImGuiStyleVar_FramePadding, ImVec2(0.0f, 0.0f));
     ImGui::PushStyleVar(ImGuiStyleVar_::ImGuiStyleVar_WindowPadding, ImVec2(0.0f, 0.0f));
     ImGui::PushStyleColor(ImGuiCol_::ImGuiCol_WindowBg, ImVec4(0.0f, 0.0f, 0.0f, 0.0f));
-    ImGui::PushStyleColor(ImGuiCol_::ImGuiCol_Text, ImVec4(0, 0.682f, 0.259f, 1.0f));
+    ImGui::PushStyleColor(ImGuiCol_::ImGuiCol_Text, ImGuiWrapper::COL_ORCA); // ORCA: Use orca color for slider value text
 
     int windows_flag = ImGuiWindowFlags_NoTitleBar
                        | ImGuiWindowFlags_NoCollapse
diff --git a/src/slic3r/GUI/ImGuiWrapper.cpp b/src/slic3r/GUI/ImGuiWrapper.cpp
index 3926e15630..59559839aa 100644
--- a/src/slic3r/GUI/ImGuiWrapper.cpp
+++ b/src/slic3r/GUI/ImGuiWrapper.cpp
@@ -2512,7 +2512,7 @@ void ImGuiWrapper::push_confirm_button_style() {
     if (m_is_dark_mode) {
         ImGui::PushStyleColor(ImGuiCol_Button, ImVec4(0.f / 255.f, 150.f / 255.f, 136.f / 255.f, 1.f));
         ImGui::PushStyleColor(ImGuiCol_Border, ImVec4(0.f / 255.f, 150.f / 255.f, 136.f / 255.f, 1.f));
-        ImGui::PushStyleColor(ImGuiCol_ButtonHovered, ImVec4(61.f / 255.f, 203.f / 255.f, 115.f / 255.f, 1.f));
+        ImGui::PushStyleColor(ImGuiCol_ButtonHovered, to_ImVec4(decode_color_to_float_array("#267E73")));
         ImGui::PushStyleColor(ImGuiCol_ButtonActive, ImVec4(27.f / 255.f, 136.f / 255.f, 68.f / 255.f, 1.f));
         ImGui::PushStyleColor(ImGuiCol_CheckMark, ImVec4(1.f, 1.f, 1.f, 0.88f));
         ImGui::PushStyleColor(ImGuiCol_Text, ImVec4(1.f, 1.f, 1.f, 0.88f));
@@ -2520,7 +2520,7 @@ void ImGuiWrapper::push_confirm_button_style() {
     else {
         ImGui::PushStyleColor(ImGuiCol_Button, ImVec4(0.f / 255.f, 150.f / 255.f, 136.f / 255.f, 1.f));
         ImGui::PushStyleColor(ImGuiCol_Border, ImVec4(0.f / 255.f, 150.f / 255.f, 136.f / 255.f, 1.f));
-        ImGui::PushStyleColor(ImGuiCol_ButtonHovered, ImVec4(61.f / 255.f, 203.f / 255.f, 115.f / 255.f, 1.f));
+        ImGui::PushStyleColor(ImGuiCol_ButtonHovered, to_ImVec4(decode_color_to_float_array("#26A69A")));
         ImGui::PushStyleColor(ImGuiCol_ButtonActive, ImVec4(27.f / 255.f, 136.f / 255.f, 68.f / 255.f, 1.f));
         ImGui::PushStyleColor(ImGuiCol_CheckMark, ImVec4(1.f, 1.f, 1.f, 1.f));
         ImGui::PushStyleColor(ImGuiCol_Text, ImVec4(1.f, 1.f, 1.f, 1.f));
@@ -2605,9 +2605,9 @@ void ImGuiWrapper::pop_combo_style()
 void ImGuiWrapper::push_radio_style()
 {
     if (m_is_dark_mode) {
-        ImGui::PushStyleColor(ImGuiCol_CheckMark, ImVec4(1.00f, 1.00f, 1.00f, 1.00f));
+        ImGui::PushStyleColor(ImGuiCol_CheckMark, to_ImVec4(decode_color_to_float_array("#00675b"))); // ORCA use orca color for radio buttons
     } else {
-        ImGui::PushStyleColor(ImGuiCol_CheckMark, ImVec4(0.00f, 0.00f, 0.00f, 1.00f));
+        ImGui::PushStyleColor(ImGuiCol_CheckMark, to_ImVec4(decode_color_to_float_array("#009688"))); // ORCA use orca color for radio buttons
     }
 }
 
@@ -2888,12 +2888,12 @@ void ImGuiWrapper::init_style()
 
     // ComboBox items
     set_color(ImGuiCol_Header, COL_ORANGE_DARK);
-    set_color(ImGuiCol_HeaderHovered, COL_BLUE_LIGHT);
-    set_color(ImGuiCol_HeaderActive, COL_BLUE_LIGHT);
+    set_color(ImGuiCol_HeaderHovered,	to_ImVec4(to_rgba(ColorRGB::ORCA(), 0.50f))); // ORCA Use orca color for headers
+    set_color(ImGuiCol_HeaderActive,	to_ImVec4(to_rgba(ColorRGB::ORCA(), 0.75f)));  // ORCA Use orca color for headers
 
     // Slider
-    set_color(ImGuiCol_SliderGrab, COL_BLUE_LIGHT);
-    set_color(ImGuiCol_SliderGrabActive, COL_BLUE_LIGHT);
+    set_color(ImGuiCol_SliderGrab,			to_ImVec4(to_rgba(ColorRGB::ORCA(), 0.50f))); // ORCA Use orca color for slider thumbs 
+    set_color(ImGuiCol_SliderGrabActive,	to_ImVec4(to_rgba(ColorRGB::ORCA(), 0.75f))); // ORCA Use orca color for slider thumbs 
 
     // Separator
     set_color(ImGuiCol_Separator, COL_BLUE_LIGHT);
diff --git a/src/slic3r/GUI/Widgets/ComboBox.cpp b/src/slic3r/GUI/Widgets/ComboBox.cpp
index 28d2a2dce6..ce9db292a7 100644
--- a/src/slic3r/GUI/Widgets/ComboBox.cpp
+++ b/src/slic3r/GUI/Widgets/ComboBox.cpp
@@ -55,7 +55,7 @@ ComboBox::ComboBox(wxWindow *parent,
             std::make_pair(0x009688, (int) StateColor::Hovered),
             std::make_pair(0xDBDBDB, (int) StateColor::Normal)));
         TextInput::SetBackgroundColor(StateColor(std::make_pair(0xF0F0F1, (int) StateColor::Disabled),
-            std::make_pair(0xEDFAF2, (int) StateColor::Focused),
+            std::make_pair(0xE5F0EE, (int) StateColor::Focused), // ORCA updated background color for focused item
             std::make_pair(*wxWHITE, (int) StateColor::Normal)));
         TextInput::SetLabelColor(StateColor(std::make_pair(0x909090, (int) StateColor::Disabled),
             std::make_pair(0x262E30, (int) StateColor::Normal)));
diff --git a/src/slic3r/GUI/Widgets/DropDown.cpp b/src/slic3r/GUI/Widgets/DropDown.cpp
index fb417bf0c7..ab48a27d2d 100644
--- a/src/slic3r/GUI/Widgets/DropDown.cpp
+++ b/src/slic3r/GUI/Widgets/DropDown.cpp
@@ -41,7 +41,7 @@ DropDown::DropDown(std::vector<wxString> &texts,
     , text_color(0x363636)
     , selector_border_color(std::make_pair(0x009688, (int) StateColor::Hovered),
         std::make_pair(*wxWHITE, (int) StateColor::Normal))
-    , selector_background_color(std::make_pair(0xEDFAF2, (int) StateColor::Checked),
+    , selector_background_color(std::make_pair(0xBFE1DE, (int) StateColor::Checked), // ORCA updated background color for checked item
         std::make_pair(*wxWHITE, (int) StateColor::Normal))
 {
 }
diff --git a/src/slic3r/GUI/Widgets/SideTools.cpp b/src/slic3r/GUI/Widgets/SideTools.cpp
index c226b39e6c..5e5700040c 100644
--- a/src/slic3r/GUI/Widgets/SideTools.cpp
+++ b/src/slic3r/GUI/Widgets/SideTools.cpp
@@ -146,8 +146,8 @@ void SideToolsPanel::doRender(wxDC &dc)
     //}
 
     if (m_none_printer) {
-        dc.SetPen(SIDE_TOOLS_BRAND);
-        dc.SetBrush(SIDE_TOOLS_BRAND);
+        dc.SetPen(StateColor::darkModeColorFor(SIDE_TOOLS_BRAND));   // ORCA: Sidebar header background color - Fix for dark mode compability
+        dc.SetBrush(StateColor::darkModeColorFor(SIDE_TOOLS_BRAND)); // ORCA: Sidebar header background color - Fix for dark mode compability
         dc.DrawRectangle(0, 0, size.x, size.y);
 
         dc.DrawBitmap(m_none_printing_img.bmp(), left, (size.y - m_none_printing_img.GetBmpSize().y) / 2);
diff --git a/src/slic3r/GUI/Widgets/StateColor.cpp b/src/slic3r/GUI/Widgets/StateColor.cpp
index 2e2b3168d6..9038d9c62f 100644
--- a/src/slic3r/GUI/Widgets/StateColor.cpp
+++ b/src/slic3r/GUI/Widgets/StateColor.cpp
@@ -40,6 +40,9 @@ static std::map<wxColour, wxColour> gDarkColors{
     {"#ABABAB", "#ABABAB"},
     {"#D9D9D9", "#2D2D32"},
     //{"#F0F0F0", "#4C4C54"},
+	// ORCA
+    {"#BFE1DE", "#223C3C"}, // rgb(191, 225, 222)	Dropdown checked item background color > ORCA color with %25 opacity
+    {"#E5F0EE", "#283232"}, // rgb(229, 240, 238)	Combo / Dropdown focused background color > ORCA color with %10 opacity
 };
 
 std::tuple<double, double, double> StateColor::GetLAB(const wxColour& color) {