Assign material to entire level with RGB colored elements

Question

Gentlemen, 
 How can I assign a material to an entire level regardless of the elements (RGB) color? Imagine if you like that we have a gazillion different objects, with as many different RGB-colors, that can change at any given moment without our knowledge. 
 Is it possible?

dshaw · Accepted Answer

open level manager 
 turn on the material column 
 add a material- if you click on none at your level row it will bring up the material palette 
 this will give you a material for everything on that level regardless of wireframe colour (but only as long as you dont have other material assignments as these will override the level option) 
 is this what you are after?