Rework printer cards (cont)

Contributes to CL-1051

plugins/UM3NetworkPrinting/resources/qml/PrinterFamilyPill.qml

@@ -4,9 +4,8 @@ import UM 1.2 as UM
 
 Item
 {
-    property alias color: background.color
     property alias text: familyNameLabel.text
-    property var padding: 0
+    property var padding: 3 * screenScaleFactor; // TODO: Theme!
     implicitHeight: familyNameLabel.contentHeight +  2 * padding // Apply the padding to top and bottom.
     implicitWidth: familyNameLabel.contentWidth + implicitHeight // The extra height is added to ensure the radius doesn't cut something off.
     Rectangle
@@ -14,7 +13,7 @@ Item
         id: background
         height: parent.height
         width: parent.width
-        color: parent.color
+        color: UM.Theme.getColor("viewport_background"); // TODO: Theme!
         anchors.right: parent.right
         anchors.horizontalCenter: parent.horizontalCenter
         radius: 0.5 * height