Did a little thing for my girlfriends halloween costume. I mostly borrowed code from my old jacket. It had 2 modes, a slow rainbow with a slow pulse, and then strobe mode for the dancefloor 
You can see examples here: https://instagram.com/p/9hJylDCc89/
https://instagram.com/p/9hxqTtCc6R/
https://instagram.com/p/9gs-8KqVxf/
https://instagram.com/p/9hJylDCc89