Yes, HUDMaker has animations and events for hovering over buttons or clicking them. There is a lot you can do with this plugin, I use the PRO version to make custom menus. The free version will let you do a lot as well. You should check it out.
Ah---I can make the button fully transparent, but Is there a way to make it clickable while a message is happening? I can only click it when the message is over, is there a code or something I can put in?