While the original Game Boy was the first system I owned (parents wouldn't get me an NES), the GB Color is a system I never really played. It came out when I was in college and I remember reading about it and thinking it was insane that they were releasing another handheld without a lit screen. When the GB Advance SP came out I jumped on it and a flash cart and it was actually my main gaming platform for years.
This summer I did buy a huge lot of gaming stuff that included a GB Color and a few games. I hope to do the SP front light mod to it at some point (and yes, I know you can play GBC games on the Advance SP.)
Thanks for starting a list of games to check out.