diff --git a/src/slic3r/GUI/3DBed.cpp b/src/slic3r/GUI/3DBed.cpp
index 5c843f4cbe..8e02ecf6cb 100644
--- a/src/slic3r/GUI/3DBed.cpp
+++ b/src/slic3r/GUI/3DBed.cpp
@@ -729,7 +729,9 @@ void Bed3D::render_default(bool bottom, const Transform3d& view_matrix, const Tr
         if (m_model.get_filename().empty() && !bottom) {
             // draw background
             glsafe(::glDepthMask(GL_FALSE));
-            m_triangles.set_color(DEFAULT_MODEL_COLOR);
+            ColorRGBA color = m_is_dark ? DEFAULT_MODEL_COLOR_DARK : DEFAULT_MODEL_COLOR;   // ORCA add dark mode support
+            color = ColorRGBA(color[0] * 0.8f, color[1] * 0.8f,color[2] * 0.8f, color[3]);  // ORCA shift color a darker tone to fix difference between flat / gouraud_light shader
+            m_triangles.set_color(color);
             m_triangles.render();
             glsafe(::glDepthMask(GL_TRUE));
         }