Oddly enough, I think RPS usually requires less research. There's far more leeway given that there are fewer details out there for celebrities than for their counterparts.

That really only works with actors, though. Band slash is a whole other ballgame, apparently, but actor RPS has been pretty loose about it, in my experience. (Hewlett and Flanigan especially, which is the only RPS fandom I sort of read and write anymore, though I am absolutely loathe to admit it.)

Thanks a ton for the Charlie/Colby recs. I'll be sure to give them a read. :) You're so awesome when it comes to research.