CB750: Black. I didn't name it, the self proclaimed custom shop that hacked at it named as such.
CBR: Julia. She's not as sexy as her namesake, but she's close enough to engender (mostly) fond memories.
Ninjette: Hanzo (半蔵). Both a historical figure often cited as a ninja, and a tremendously popular name for ninja characters in various fictional media. The version from Samurai Shodown is probably the fictional example I was thinking of.