I had to make a "tunnel" of sheet metal to look through because the compass rose on my vertical card compass mounted way out on the end of my instrument panel cover was projected up into my canopy. I wrapped the tunnel in black felt, which worked well. But over the years, it bleached out to a dark purple color.

When I resprayed the instrument panel cover with a different flat black can (better but still not perfect), I also sprayed the felt. That proved to be the solution: flat black painted black fabric. I can't say how durable it might be in a wear area but this is way out under the canopy so I can barely touch it anyway even when cleaning the canopy.

Chip Bearden
JB