Decals on Rigged Models Become Metallic

For some odd reason on some models my friend had made that I rigged, the faces all became metallic but only on certain people?? Inside of any place created.

I use Future as the lighting, but changing it doesn’t remove the metallic look of the decals. Plus, months or literal days before I reopened studio this was never an issue. I’ve never seen something like this on the forum either, if someone had any idea I’d love to hear it!!

Examples below:


Before: image
After: image
image