Hi Bud You Need To Patch Your System To Enable Third Party Themes Here Is A Tutorial And The Tools Needed That should Fix It For You

tutorial
https://virtualcustoms.net/showthread...video-tutorial

Universal Theme Patcher
https://virtualcustoms.net/showthread...-Theme-Patcher

Theme Resource Changer
https://virtualcustoms.net/showthread...re-dll-editing

If You Need Any More Help Just Ask Ok Bud