When I tried installing Drewgarens roms (Lexlite, Zapx) without installing GB first, I got stuck at the boot logo and had to SBF and start over. I learned my lesson, and installed the pre-rooted GB ROM first, and everything worked. However, I am now switching between ROMS (Lexlite, ZapX, and Blurrybread) and was wondering: If I clear my data, do I have to reinstall GB first, and then install the ROM? Or can I just install the ROM file (e.g. ZapX ROM file)? Also, are there themes out for GB yet? Specifically, I'd like Revolution on GB.