added backlight and fixed outbound

qml/ButtonDelegate.qml

@@ -70,13 +70,20 @@ Item {
         height: width
         radius: width / 2
         color: btnColor || "#7b007b"
+        // Idle: no ring. Feedback states draw the configured coloured outline.
+        // ColorBehavior is only enabled while in a feedback state so that on
+        // return to idle the colour snaps away immediately — otherwise a ~1px
+        // red (or green) remnant stays visible while width animates down.
         border.color: status === 1 ? delegateRoot.okColor
                      : status === 2 ? delegateRoot.errorColor
                      : status === 3 ? delegateRoot.pendingColor
                      : Qt.lighter(btnColor || "#7b007b", 1.5)
-        border.width: status === 1 || status === 2 || status === 3 ? delegateRoot.feedbackWidth : 1
+        border.width: status === 1 || status === 2 || status === 3 ? delegateRoot.feedbackWidth : 0
         Behavior on border.width { NumberAnimation { duration: 200 } }
-        Behavior on border.color { ColorAnimation { duration: 200 } }
+        Behavior on border.color {
+            enabled: status === 1 || status === 2 || status === 3
+            ColorAnimation { duration: 200 }
+        }
 
         // Hold-to-activate state (0..1). Only used in "hold" trigger mode.
         property real holdProgress: 0.0