Scratched bumper

[poledancer]

Hi,

 

I scratched the bumper on my '06 Outback (silver metal/dark silver bumper color combo), and am looking for advice on what to do. The scratches are not deep and there are no cracks or structural damage, but they look bad because the plastic under the paint is light gray. Any advice on what to do? Can I paint these locally (spray paint, nailpolish-like applicator) or will I need to paint the whole bumper?

 

Thanks for any guidance/advice,

 

Kriss