> Every browser supports CMYK color encoding/space… You have an unusual definition of "support". You can't specify colors in CMYK, there's no such thing as a C

> Every browser supports CMYK color encoding/space… You have an unusual definition of "support". You can't specify colors in CMYK, there's no such thing as a CMYK <canvas>, etc. Sure, you may get a rectangle with an image when you view a CMYK JPEG, but that's an unintended, virtually untested consequence of the bundled or OS media decoder associated with the file type.