Completed Userbar Hue changer

Whilst Left/Pika whatever you call him figures it out, I'll request it in case anyone knows how to do this or has the plugin
Screenshot
https://i.imgur.com/PkjuNn7.png

If anything all im currently looking for is hue, not worried about saturation to much.
I've got an example of something I made to test the hue rotation
https://jsfiddle.net/ATpv8/34/
I used my admin userbar from my own forum, rotated it and unsurprisingly works.
Basically I'm looking for something like that, doesn't have to have a slider, could even be where you type in the amount of rotation you want.

Hope somebody could help.