Detect when textures are loaded or not?

Hey everybody, got a quick issue I was hoping someone here might have some info for. When my game loads, the textures all are blue and not fully loaded for a few seconds, then pop back to normal afterwards. Its visually very unusual, and I would like to keep the user hidden behind a loading screen until it resolves itself, but I don't know how to detect whether or not the textures have finished loading or not. Is there a way to determine this in code?

 

are you are using a Substance for generating the textures? That's the only time i have have seen that a material was blue for a short time while the substance is generating the texture.

 

Yeah I am.