My Druids are Ferrari red gloss, and so were my Def2s. Strong. It fits my home's scheme. My Def1.5s were Maserati Blue Nettuno, and my new Def4 are a Cadillac metallic blue. Nice counterpoint to the red system. I'll say this:
One of my cars is black. No more black cars. They look great clean, but they're perfectly clean for about 37 minutes after washing. Zu speakers in gloss black look splendid but show every fingerprint, dust spec & clearcoat scratch, just like a black car. And personally, I think Defs are too big to be a pure black object domestically.
Gloss red shows very little routine dust & prints. All colors are equally easy to clean & polish with automotive products. If red is too vivid, I think deep metallic blues look less severe than black and the color is more forgiving between cleanings. Alternately, a friend here in LA had a pair of Defs in a BMW metallic charcoal, and that was also elegant & forgiving compared to black.
But if black is your thing, consider choosing a black with light metalflake. It makes a black paint less glaring of faults.
Phil