I have one I've been meaning to customize too... I just can't find the time!
Don't I know it... though I think I'm starting to be convinced to keep the shell and turn it into something unique.
I'm having fantasies of how I would make the Show Stable look post apocalyptic... airbrush or ashes to make scorch marks for a start? Make it look dirty and old?
This may be partially because the upcoming release of Fallout 4 has me in the mood for that sort of thing.