I’ve set my desktop background to cosmic spectrum green.

Scientists: Green is dominant color of stars
By Paul Recer, 1/10/02 (AP)

Astronomers at Johns Hopkins University said that averaging all the colors from the light of 200,000 galaxies shows that the current color of the universe is a sprightly green.

We haven’t been to a paint shop yet to see if there is a fancy name for it,” said [Dr. Ivan] Baldry, [Johns Hopkins]. He calls the color “cosmic spectrum green.”