Add RustColors singleton helper.

qml/ProjectView/ClideProjectView.qml

@@ -4,6 +4,8 @@ import QtQuick.Layouts
 
 import "../Editor"
 
+import clide.module 1.0
+
 SplitView {
     Layout.fillHeight: true
     Layout.fillWidth: true
@@ -11,14 +13,15 @@ SplitView {
 
     // Customized handle to drag between the Navigation and the Editor.
     handle: Rectangle {
-        border.color: SplitHandle.hovered ? "#303234" : "#3c3f41"
-        color: SplitHandle.pressed ? "#4b4f51" : "#3c3f41"
+        border.color: SplitHandle.pressed ? RustColors.pressed : SplitHandle.hovered ? RustColors.hovered : RustColors.gutter
+        color: SplitHandle.pressed ? RustColors.pressed : SplitHandle.hovered ? RustColors.hovered : RustColors.gutter
         implicitWidth: 8
-        opacity: SplitHandle.hovered || navigationView.width < 15 ? 1.0 : 0.0
+        radius: 2.5
 
-        Behavior on opacity {
-            OpacityAnimator {
-                duration: 700
+        // Execute these behaviors when the color is changed.
+        Behavior on color {
+            ColorAnimation {
+                duration: 400
             }
         }
     }
@@ -28,7 +31,7 @@ SplitView {
 
         SplitView.fillHeight: true
         SplitView.preferredWidth: 200
-        color: "#303234"
+        color: RustColors.explorer_background
 
         StackLayout {
             anchors.fill: parent