Two-part allegorical saying The crow landed on the pig.

Two-part allegorical saying: The crow falls on the pig.

Answer:

I don't look at myself when I see others black.

Black to black

Black plus black.

See others black, but you can't see yourself.

I only see others being black, but I can't see myself being black.

You can't see your own black just by looking at other people's black.

The same black.

See others dressed in black.