Just got front and rear bumpers from the salvage yard. They are in pretty good shape, but could use a touch up here and there where the plastic is scuffed.

Is there a special flexible body repair material (besides regular bodywork fiberglass) that I should use to touch up the bad spots on the plastic bumper surrounds?

Is there a special bluish gray spray paint at "common" auto parts stores to match the plastic parts on the bumper? Mainly I'm wondering if a special paint is needed that will flex with the plastic and not crack too fast.

Thank you in advance.
D.