Hey, if it doesnt slow the skin down(noticeably) then why not. Dont know how you'll change the colors. Will it just change all of the colors of the skin? Most of the skins posted so far have no alpha blending so the colors for the buttons for example cant be changed because it contains parts of the player background. Can implement conventional colorthemes, but I think it might slow the skin down and make skinning difficult because you then have to work with antialias edges and stuff like that.
Was thinking of adding lets say 20 themes that change all the colors, with all layer in one colorthemegroup... but dont think that might work.... maybe just have a brigher, darker,..... themes. But if RGB can work with it why not. (Dont know what/how you want to implement it basicly.. but if you think it could work)
Would be cool if Martin could add a way change system colors from maki... then I could add a bitmap that could be used to read all the system colors for the skin... would really make it allot easier.
ClassicVis: Yes want to add the timeline vis... and a few menu options.. but dont want to make it too complicated.. just basic settings. The timelinevis will have to work of the colors found in the mainframe.png file... so no animation file

... Dont know if this will slow things down.
Another thing that I havent tried before that I think you might be able to help with:
I want to make the bands for a mode thin and then hide ever second line so that it look like a hi def classic vis. Is it possible to region out a certain part of a bitmap so that I can paste it over the <vis object?
Will work more on the engine in the next build.