Is it possible to repaint black fiberglass bumpers roughly the same color
with a spray can?

I realise it's sounds low-tech, but I've had great luck and results with  the
metal running boards and metal bumpers on my 54 chevy pick up using
Rustoleum from a spray can. Honestly it looks great on the 54 and has lasted for
years. I did the wheels too. But we're talking a pretty low-tech vehicle with  the
54 pick up. And I did remove everything from the vehicle, striped everything
down to bare metal, primed, then painted.

Thing is I'm guessing getting paint to adhere to the fiberglass might be a
problem. And, I'm guessing the paint should be a little "flexible" to allow
limited damage from stones, bugs, deer, etc. that'll eventually hit it.

So any recommendations of paint that will work and how to prepare the
surface will be appreciated. Also a guidline for color to get close to the  original
black color is appreciated.

 Also if warranted, advice like "Don't be a fibergl-ASS! Take it to a  body
shop to have it professionally painted you moron." will be appreciated if  the
idea of painting from a can is just too stupid to entertain.

Thanks,
Jeff
83.5 Westy
LA,CA