Originally posted by Lethal Rogue
Doesn't Farfalla have a golden lightsaber?
He did.
Corran Horn has a silver blade as does Tionne (sp?)
Galen Marek had an aqua lightsabre (he originally had a red lightsabre but that was lost. For a while he used Kota's green lightsabre. Later he personalised it by replacing one of the green crystals with a blue one so it had an aqua blade).
If I'm not mistaken, most of the "unique" color crystals are only seen in gameplay, usually in the KOTOR games. That's not to say that they don't exist, of course, but it's difficult to say who wielded them or when they were used. One notable exception is the silver lightsaber crystal, which several characters have used. IIRC, there was also a pink lightsaber color crystal used by Darth Zannah called "Bane's Heart" and a few slightly rarer variants of the more common colors that were basically just different shades of green, blue, red, etc, etc.