Improve edit lisibility

LeCountdown/Assets.xcassets/AccentColor.colorset/Contents.json

@@ -1,6 +1,10 @@
 {
   "colors" : [
     {
+      "color" : {
+        "platform" : "universal",
+        "reference" : "systemPinkColor"
+      },
       "idiom" : "universal"
     }
   ],

LeCountdown/Views/DialView.swift

@@ -22,7 +22,7 @@ struct DialView: View {
     var body: some View {
         ZStack {
             
-            Image(timer.imageName).resizable()
+            Image(timer.imageName).resizable().saturation(self.isEditingBinding.wrappedValue ? 0.0 : 1.0)
             
             switch self.isEditingBinding.wrappedValue {
             case false:
@@ -42,7 +42,7 @@ struct DialView: View {
                         Image(systemName: "gearshape.fill")
                             .font(.system(size: 50.0))
                             .padding(30.0)
-                            .foregroundColor(Color.white)
+                            .foregroundColor(Color.accentColor)
                     }
                 }
             }
@@ -114,7 +114,7 @@ struct DialView_Previews: PreviewProvider {
         
         DialView(
             timer: Countdown.fake(context: PersistenceController.preview.container.viewContext),
-            isEditingBinding: .constant(false), frameSize: 150.0)
+            isEditingBinding: .constant(true), frameSize: 150.0)
             .environmentObject(Conductor.maestro)
             .environmentObject(BoringContext())