But how can one element—chromium—create the red color of a ruby and green color of an emerald? Rubies and emeralds have the colors they do because, like many substances, they absorb some ...

The iconic green dye that transforms the Chicago River remains visible well after the event has ended. Watch the river live.

Have fun and experiment.” “Emerald green is a color of many moods depending on who she is with,” says interior designer Gray Walker, principal of Gray Walker Interiors in North Carolina.