Cool game! I enjoy these kinds of Simon Says button mashers. The aesthetics are really good (love the nightclub backgrounds!) - I would tweak some of the UI a bit, though. Text is a little small in some areas, and I would offset the arrows position just a bit to help with fast readability.
The color change powerup was very neat: I didn’t think it would have that large of an effect until it was used on me! But when I use my own powerup, the notification bubble covers up my own arrows, so I often didn’t use it because I wanted to be able to see better.
Fantastic job! I had a lot of fun!