Intuitively, the more intelligent way to spell the phenomenon of light or visual perception that enables one to differentiate otherwise identical object.
"Detour is pronounced dee-toor. Colour would be pronounced kuhl-loor. However, it is pronounced kuhl-er so color is the more appropriate spelling."
(The MODERN spelling of) one of the shades of a prism, like red, blue, green, yellow, etc. Colors are decided by the amount of light that is absorbed or reflected by the human eye. Don't give me any crap about this "colour" shit and it being "the original spelling". Any educated person living in the 21st century knows that the word isn't pronounced "kul-oo-wer". It's 2 syllables: "kul-er" And stop bitching. After all, this is an American website. If it was European, I wouldn't care.
Steve: "The book says 'add two teaspoons of red dye for colour, and--'"
Jon: "What!?!? 'COLOUR'!?!? AAAARRRGGGGGHHHHH!!!! @&%#$!!!! IT'S F*****NG COLOR!!!!!!!!!