This test checks colors.

color "red" color "rgb(255,128,0)" color "rgb(100%,50%,0%)" color "rgb-icc(100%,50%,0%, sRGB, 1, 0.5, 0)" color "rgb-icc(0%,100%,0%, unknown, 1, 0.5, 0)" color "cmyk(0%,0%,20%,40%)" (Khaki)