That tests got harder and harder as it went along didn't it? It seem so simple at first. The boxes were big, and the lighter color was quite obvious to see. But the further along I went with it, the smaller the boxes got with more to chose from and the harder it became to distinquish which color was lighter then the others. My results at the end of the test, I only missed one, which was at the very end of the test so I actually didn't do too bad considering I don't have the best eyesight.