I don’t think the fact that you can be trained to differentiate a color means you were actively responding to that differentiation prior to being incentivized &

I don’t think the fact that you can be trained to differentiate a color means you were actively responding to that differentiation prior to being incentivized & systematically exposed to the difference. Not arguing with your overall point, but that experiment is a weak supporting argument. (Although a strong test for what nuances we can learn to perceive quickly.)