Midterm Idea

My midterm idea is two create an interactive game where there is a set of say 10 lights all off ( one light a different color than the rest) and each light would be lit than turned off at a certain speed in order from left to right. The goal would be to press a button when the different color light is lit. I also want to add 3 levels (easy,medium hard) so the light would get faster at each stage.