@trinsec you could only do such a test in person. Monitors are designed for trichromats so while they can be used to take tests that ide tify thr colorblind a monitor would be useless for ide tifyibg tetrachromats.
Youd have to work with real world colors. For example if two purples loom ide tical to a normal person, when i reality one purple is a red-blue color mix and the other is just pure purple, assuming you had a fourt purple receptor then these would lok
Ok like different colors to you but the same to everyone else