unwanted materials in unity

Hello, I've imported about 30 models that I want to have the same simple material on by default. However when all of these are brought into unity, there is a material made for each mesh. I only want one material for all of them, But i cannot work out how to do this, if i delete these unwanted materials my meshes go pink and i cant find a way to just put the one texture on them all by default.

Anyone got any ideas how I could do this?

Thanks much.

 

Normally Unity takes your assigned texture or 3D app material and makes a corresponding Unity material for it. This is usually not a problem. Make sure you have assigned the same material to your meshes in your 3D modeling application.

You can also change the import settings. Select your mesh in the Project view. On the right-hand side, look under (FBXImporter) and Materials. The standard behaviour is Per Texture. Change this if needed.