This application DOES NOT require root!
TWRP Theme Manager lets you customize your TWRP Recovery with free themes!
You can download them within the application itself or put them in your sdcard and install them!
ATTENTION: As stated in the application, I'm not responsible for any damage that may occur to your device. Because of this, please make always a backup!
ATTENTION2: This application has been tested by me ONLY with TWRP 2.7.0.0! If you have outdated version, you can try but I can not assure you the outcome!