...is there a stigma in Poland about red hair?
Only if those red nose hairs aren't trimmed.
Haven't you heard of "Red Hair Day" in Poland? On April 1, all natural red-haired Poles meet in the town square, hold hands and dance
in a circle (kolo). After a good sweat, they begin to gyrate to something akin to the Krakowiak while simultaneously speaking and yelling in 'tongues'.
At this point the village children are allowed to throw tomatoes at the participants.