Color or Texture problem?

I was messing around on blender to combining two different meshes to just get one crop top tank top. I was combining a 3d ab/pec top cc and a crop top cc. I got the mesh on blender how I want it, and I put it into my game. But when I opened up Sims 4 and tried it on, my sims torso was all discolored. Is there a texture that I'm missing? Or is it a color problem?

Crop top, tank top:
imgur.com/a/gOb9R