What color are radio waves anyway? With computers, astronomers can make them any color they want, and even liven up images at just one radio wavelength by making the different brightness levels different colors, as has been done for the image of the radio emission from Jupiter. These artificial colors are called "false colors." 

cartoon, scientists looking at picture, "Of course these are false colors. The reds are really greens, the greens are reds, the blues are oranges, and tyhe oranges are blues." other scientist: "Makes sense."(From Sidney Harris)