Change multiple material color and make the scene into one color?

I’ve tried to make transition which make all the elements in my scene goes white.

I’ve followed this tutorial (Outline Transition Effect Using Postprocess Material - (UE4) - YouTube) using sphere mask post process material.

Now I’m confronting two problems:

  1. How can I make the assets in white color? Using scene diffuse or depth color isn’t really what I’m looking for I guess.

  2. For some reason I have two scene in one level. The one I want to make it white is above. Before I place this scene upward, material explained in the tutorial worked fine but now it’s not aligned with the world center, it is not working. I’ve tried to make blueprint and connect the mask location to bp actor, but it’s still not working.


    Here’s my blueprind and material editor. I mean the struggle is real when it comes to ue4.