Hi, thank you.
I suppose you mean prevent it temporarily? The only way now is to put something in front of the socket and have “snap open only” option enabled. This option will exclude sockets that have some obstacle in front of them from snapping.
I about changing colors, i suppose you are talking about the preview actor? There is a variable “material” in preview actor, you can set it to your own material with different colors. You can use the default green material in the plugin content, modify it and replace. By the way, the preview actor is a blueprint so you can easily change how it works