I just rooted my Galaxy S4, what kind of themes can i put on there?

I was on a few different forms and read that there are rooted launchers or something like that.
I was just wondering what some of those launchers are called. I am using the stock ROM, and I don't really want to put a custom ROM on there, I just want to change up icons, some colors, as the lost custom ROM I put on, bricked the phone.
I was just curious what different rooted launchers there are out there.
Thanks in advance.