How to change call screen theme?

[OGAngryHulk]

A few years ago I installed an app that changes my call screen when someone calls me to a christmas theme. It's been so long I can't figure out how to get rid of it. I checked themes, app manager and everywhere else I can think of but I can't find how to change it back. Any help would be appreciated.

 

[methodman89]

Go to your home screen and press and hold in a blank area. The option for themes will appear with a few others.
Make a new selection. Be sure to select the change also at the top for the lock screen and home screen.