I just walked into a Wal Mart Neighborhood Market that requires masks, without a mask, and the person at the entrance said I need to have a mask and tried to hand me one out of her box of masks, and I just ignored her and kept walking. Was able to get what I needed without a mask and wasn't kicked out or anything.
No idea why people at this point STILL believe masks work or make any difference.
I carefully rip 2 of the 3 layers out of the typical 3-ply masks. Super thin and breathable, and, like you say, dark colors look solid enough. Even with the blue ones I've been on a dozen or more flights and no one has said a word. You can see my mouth right through it.