my bad. just playing.
graycode + how the eyes build color. black/white red > green/yellow > green > blue > pink/purple.
https://web.mit.edu/synesthesia/www/trends.html
I agree. I was telling my family about it yesterday and they mentioned kids toys are being made in high contrast now because of this type of study. black/white(primary) red(secondary)
which means it isn't just during synesthesia, eyes actually develop that way i guess.
http://www.huggamind.com/highcontrast.php