Is it possible to have a theme with different icons for the same app when displayed in the quick launch bar vs in the normal launcher?

My custom theme icons look great in the quick launch, but stand out like sore thumbs in the normal launcher screens. I'd like to be able to show the normal stock icon in the launcher.

Thanks

ps Or ideally, it would be cool if there was a way to have the same icons always show in the launcher, but then tie them to whatever app you want. Guess that would require an app itself though.