10 Colorful Idioms: out of blue for your gray matter (2012)

What are idioms? This is a common question for many native speakers and individuals who learn English as a second language. Essentially, idiomatic expressions have acquired an additional proverbial meaning that goes beyond the literal phrase. Here are a few examples of idioms that use the names of colors in an imaginative way.

As Black as the Ace of Spades

Blue Blood

Out of the Blue

A Gray Area

Gray Matter

Grass is Always Greener on the Other Side

Pink Slip
Wave a White Flag

Red Herring

Green Thumb