Illustration of a flag using prism and non-prism rainbow colors. A rainbow flag is a multicolored flag consisting of the colors of the rainbow. The designs differ, but many of the colors are based on the seven spectral colors of the visible light spectrum. [1] [2] More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.