I find that if you squeeze your own ass hard enough, and for long enough, sometimes runs appear out of nowhere.
But, I think your best bet would be to look at the Game List in search of your range of colours, and if you want to see a run that features the blind, yet boner inducing man named Brock, your best bet is to post here: Shaboogy. Then again, I have no way of knowing for sure if Brock finally got assassinated, so someone else is probably featured in Pokemon games by now. Whatever.