Eyes
What can your eyes actually pick out? Spot it, judge it, guess it. Looking carefully is the whole task.
What can your eyes actually pick out?
These ask you to see something rather than do something quickly: a shade that does not match, a word fighting its own color, a count too fast to actually count. Accuracy carries more weight than speed, so rushing does not help. Read the scoring note on each page, because some of these are scored on how far off you were rather than on being exactly right.