I have a black car. Maybe it was just bad luck but for the first week or so after I purchased it there were a few incidents where it was like other drivers were having problems seeing me.
I now drive with my parkers on.
As for keeping it clean... I'm not fanatical about it, but since I work from home it's usually safely inside the garage anyway. Except when I go for my country drives, there's a few battle scars from those.
