AVRCP 1.3 is working great, but the Play Store has the colors a bit messed up. I am going to try to reinstall Play Store. Reinstalling Play Store does not help, neither does clearing cache/memory.
Going to try reflashing Gapps.
This is caused by a different version of the rendering engine that I added.
Tomorrow I can create a plain version of b31 with just the AVRCP patch added.