Yeah, no. That works if the colors are easy to recognise but considering how many times I guessed wrong when facing two unlabeled hues I was able to distinguish but not clearly recognise (e.g. knowing one is green and the other red but guessing wrong because the green is brighter when normally the red would be brighter).

If I understand correctly though, I think that suggestion would defeat the purpose of the stroop test that this method is using to trick people, cause the whole idea is that the word ocean is supposed to mislead you and the color of the text can be green. You tap the text color, not the meaning of the word.