Sounds like you're very fortunate at work, and some of the girls are just talkin' about your Proton in an effort to flirt with you. Same theory as walking your dog in a city park-- "Oh my, what a cute doggy you have there (giggle-giggle)". The girls probably really don't care about the Proton or if it was Ebony or any other color, but are more interested in YOU for other reasons (hmmm, time to ponder).
I concur with Tom4Bren, and just get a coy Vanity Plate that reads "FOR HIRE" or "TX TAXI" perhaps. If you still wanted a different paint scheme on a Proton-- how 'bout Urban Camoflage in the Yellow Version format. Now that would be both cool & macho at the same time.![]()