Color de hormiga

Pronounced coh-LOHR de orr-MEE-gah
Lit. a Spanish phrase meaning 'the color of an ant.'
Col. a idiom meaning something that has taken a negative, ugly, or unfavorable turn; something that has gone awry; a misfortune.

Person 1: I made $50 playing black jack, you?
Person 2: Color de hormiga, I lost $500!