Now your asking for a lot GM...you'll be lucky of you ever see pngs implimented in rightclick.
I know, but I can't help it! every time I try to do something different with it, it seems like I run into another wall. It's just annoying to want the arrows in a certain place and then the plugins don't fit the skin right , or having to compromise where I want to put them so that the plugins fit. 
I gave up expecting any major update on RC. Its too bad though...for those of us that use this program its become a ' must have '
I agree Karen, once You become an RC user You can't go back!
and hopefully since You gave up expecting an update, that means We'll be seeing one soon, because things usually happen when You least expect them! 