Umm, yeah.
You might want to look at spraying the plastics with plasti-dip. It's temporary, which is good and bad. Lasts up to 3 years, and will peel off whenever you like.
I would imagine Stadium Yamaha has any Kymco plastics you might want. (Mention the forum.) but probably not in black, unless that's a stock color. If you want to change colors, you may be better off with Bondo and paint. Or plasti-dip.