After working in the biz since the early seventies I can agree with these guys.... no trend lasts forever.

Bill is absolutely right about the care of a flat finish. It is fragile, and cannot be easily cleaned up. Your only choice may be to repaint an area, and hope it matches somewhat. :-(

The trend I have been waiting for is flat clear over a bright metallic, that has a lot of color shift. Same repair problems, only worse... but it has a "magic" look to it. :-)