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I agree , the less the text the better. But as core game loop we tried to implement the Stroop Effect, founded by psychologist J.R. Stroop . Normally you should tell the answer, so the best way to implement is via text otherwise it would'nt serve the purpose :/

"The Stroop effect is a simple phenomenon that reveals a lot about how the how the brain processes information. First described in the 1930s by psychologist John Ridley Stroop, the Stroop effect is our tendency to experience difficulty naming a physical color when it is used to spell the name of a different color. This simple finding plays a huge role in psychological research and clinical psychology."