Re-colorize iTunes/iPhoto sidebar icons?

I simply can't abide Lion's/Apple's dedication to monochrome sidebars everywhere in Lion. The SIMBL technique still works in the Finder, but the new 10.6 version of iTunes breaks all the previous hacks I've tried. What I'd love is to be able to edit the iTunes.rsrc file (and similar) myself but I don't know of any way to do that in OS X. Is there a way to edit (copies of) .rsrc files? Failing that, is there a way to change the depressing gray sidebar icons in iTunes 10.6?

There's an app called Lion Tweaks that can do what you want (at least with the Finder icons). There's also a Mountain Lion version.