I want to create a animated gradient background (with possibility of using multiple color inputs and direction) that changes (transition) slightly over time in a cycle (really smooth).

I was hoping to find something that is jQuery/javascript based, but i can't find anything. Only example that i found where i like smooth way it works and looks is this: Almost Calm

But i don't want the hover or circle of course and setup my own coloring etc etc.

Can somebody help me with this?

Help is much appreciated

Thank you.