Hint if a block will be deleted when it is dragged

addons/block_code/drag_manager/drag_manager.gd

@@ -22,7 +22,9 @@ class Drag:
 		get:
 			return action
 		set(value):
-			action = value
+			if action != value:
+				action = value
+				_update_action_hint()
 
 	var target_snap_point: SnapPoint:
 		get:
@@ -122,6 +124,13 @@ class Drag:
 		var from_global: Vector2 = _block.global_position
 		return from_global.distance_to(snap_point.global_position)
 
+	func _update_action_hint():
+		match action:
+			DragAction.REMOVE:
+				_block.modulate = Color(1.0, 1.0, 1.0, 0.5)
+			_:
+				_block.modulate = Color.WHITE
+
 	func _update_preview():
 		if _preview_block:
 			_preview_block.queue_free()