First off, im going to throw all uncommons, rares and most legendaries out of my forthcoming comment. Exotics and popular legendaries should not have shaders as the weapon's look and color are ingrained in the title. Who would was a blue "Red Death"? Thunderlord has a blue-ish look due to it dealing arc damage which goes with the gun. Monte Carlo looks like a plastic toy...and shoots like one too so its fitting. Alternative: customizable emblems that can be placed on your guns. Similar to BF or COD emblems