I think I know how they might look.
As far as cost and I didn't mind spending a little time, I might just lay them flat, mask off appropriate areas and brush on multiple coats of black latex acrylic house paint, wet sanding in between coats.
It could go relatively quickly with dry hot weather and properly thinned paint( so as not to leave brush marks).
As far as cost and I didn't mind spending a little time, I might just lay them flat, mask off appropriate areas and brush on multiple coats of black latex acrylic house paint, wet sanding in between coats.
It could go relatively quickly with dry hot weather and properly thinned paint( so as not to leave brush marks).