The thing though (if I got the article right) is that these "reddish green" and "bluish yellow" colours are "virtual". It is almost like they're the result of a

The thing though (if I got the article right) is that these "reddish green" and "bluish yellow" colours are "virtual". It is almost like they're the result of a glitch in the brain. So I guess standard colour mixing rules don't apply.