Horse can see well blue.

Horse can see well blue.
http://stalecheerios.com/horse-training/horse-color-vision/

One of Japanese great horse Stay Gold's wear is coloured yellow and black as stripe. And He likes Blule shirt's.

His story is really interesting.
He actually hasn't won so many times and his character is said that he would eat meat if he was served.
His race is also featured amd likes Blue shirts.
He could not win Japanese Great horses but won Fantastic Light and Ekraar.