It's actually metal musician outfit here. There is no particular standard, and I'd like to shoot some goth people but it's not often when I encounter such a performer :) though, I believe, these sort of outfits are rather common in Finnish metal stage. Usually these people do not pay much attention to their clothes. so indeed they may look whatever :)

This band will be on the upcoming Eurovision, see them on TV :)

Askar Ibragimov - middeneaht.deviantart.com