Added ResetSelectableHighlight component

Runtime/Scripts/Utilities/ResetSelectableHighlight.cs

@@ -0,0 +1,37 @@
+/// Credit SimonDarksideJ
+
+namespace UnityEngine.UI.Extensions
+{
+    /*
+    Handy Selectable script to un-highlight a selectable component in Unity (e.g. a Button) when the user moves away from it, EVEN IF the user has holding a button on it.
+
+    Resolves the situation where Unity UI Components remain in a highlighted state even after the pointer has moved away (e.g. user holding a button, mouse, pointer down).
+    Now whenever the cursor leaves the component, it will force the UI component to revert to un-highlighted.
+    */
+
+    using UnityEngine;
+    using UnityEngine.EventSystems;
+    using UnityEngine.UI;
+
+    [AddComponentMenu("UI/Extensions/ResetSelectableHighlight", 31)]
+    [RequireComponent(typeof(Selectable))]
+    public class ResetSelectableHighlight : MonoBehaviour, IPointerExitHandler
+    {
+        [SerializeField]
+        private Selectable attachedSelectable;
+
+        // Start is called before the first frame update
+        void Awake()
+        {
+            if (!attachedSelectable)
+            {
+                attachedSelectable = GetComponent<Selectable>();
+            }
+        }
+
+        public void OnPointerExit(PointerEventData eventData)
+        {
+            attachedSelectable.targetGraphic.CrossFadeColor(attachedSelectable.colors.normalColor, 0f, true, true);
+        }
+    }
+}