According to what research I’ve read, tetrachromacy has been demonstrated in a handful of females with a family history of colourblindness. However, there’s not

According to what research I’ve read, tetrachromacy has been demonstrated in a handful of females with a family history of colourblindness. However, there’s nothing precluding an XXY male from being a tetrachromat. Indeed, 1 in 1000 males are XXY and most are asymptomatic, and I have good colour discrimination, so I’ve always wondered if I might be a tetrachromat. Too bad there’s no way to test it on your standard-issue RGB LCD…