If you want stability of CM10.1 but have the ability to switch to many different themes (over 50+) on the go (for free), check out the latest Avatar ROM for your HTC Evo 4G LTE.
Based on the latest CM10.1 Android 4.2.2 sources, the Avatar ROM brings you CM10.1 coupled with MIUI themes ported to Evo 4G LTE.
What can you do?
Well, MIUI themes bring a ton of customization to your phone without you actually doing anything. Along with themes also come custom lockscreens, which is a bonus for those of you looking to swap out theme on your phone without a lot of work.