Watch and remember what order the shirt color changes, then click the color buttons in the same order. The pattern gets longer each time you are successful at remembering it! Post your high-score in the comments!!
This is a remix of liverpol-fc's excellent idea. I used a different method for resetting the score and created a separate variable for the "difficulty level" which makes the sequence longer each time you repeat the pattern successfully. I wanted to add the high scorer's name, but haven't finished that yet!