Incidentally, I still can't view attachments in messages from this account, I have to log into another account to see them.
A couple of caveats when it comes to painting the bumper. . .
I think it is supposed to be flexible, so if you actually bump something with it, then the paint might possibly crack or peel.
It will also be exposed to a lot of abuse from bouncing gravel near the road surface, and catch a lot of dings and chips.
This is why I suggested putting colored vinyl tape on it, because the tape would be easy to replace if it becomes scuffed, dinged, bug-and-tar stained, etc.