A girl who is very particular about what colours are called. She will always correct you when you call the colour magenta pink. Or when you call turquoise blue, etc. It may be annoying, but she's right.
Girl: *holds up 2 shirts* Should I wear my blue shirt? Or my pink one?
Colourqueen friend: Neither. Because that's turquoise and that's magenta.
Girl: I forgot I was speaking to a Colourqueen. Should I wear my TURQUOISE shirt? Or my MAGENTA one?
Colourqueen friend: *smiles* Magenta!