I have always had black cars, because I think they look really nice. I know that dust shows up easily on them but I think they look so pretty and shiny
They just collect heat too much for my taste, personally. I like certain shades of blue - you can get the mirror effect there as well if you keep it clean and it's the right hue.
I love the rich, dark green, but I haven't owned one. Mostly I have white cars because they seem to be the least expensive. I haven't yet purchased a vehicle brand new.