Teleporting with a pet will reset the pets name color. Newest version of EchoPet on spigot 1.8. It seems like any kind of teleport, at first I thought it was just world changing.

Looks like the problem is located here:
https://github.com/DSH105/EchoPet/blob/master/modules/EchoPet/src/main/java/com/dsh105/echopet/api/PetManager.java#L340

https://github.com/DSH105/EchoPet/blob/master/modules/EchoPet/src/main/java/com/dsh105/echopet/api/PetManager.java#L350

Hopefully the above commit fixes the problem. Thanks for pinpointing it @Spirit55555 :).

I have this issue too.