idioms using “color”

A horse of a different color

A completely different situation or subject

“You can’t compare the two; they’re horses of different colors.”

Color me blue

To be sad

“Color me blue; today is the last day of our holiday in Hawaii.”

Off-color

In poor taste

“He told so many off-color jokes that he was never invited to another party.”

With flying colors

Very well, extra merit

“Kinuta-san passed her final exams with flying colors.”

Show one’s true colors

Reveal one’s true character