Was the Game Boy Color a successor to the original Game Boy?

[Barkley]

mZuzek said:
I used to think of it as a successor, but I guess it really is just more of an upgrade, considering most "Game Boy Color" games could also be played on the original Game Boy anyways.

I view it as a sucessor, only 28% of GBC games were playable on the original gameboy. (576 GBC games, 160 Backwards Compatible).