Which emulator should I be using if I eventually want to be able to run a game on an actual gameboy color?
They're all good. Maybe try BGB.
I hear Gambatte is a hardware accuracy driven emulator that is very accurate. I'd recommend it as a test emulator.
I don't use emulators which use 100% CPU usage to wait for vblank. They make laptops really hot.
Bah, my laptop gets really hot anyways. Well, thanks.