The hue Shift is how I blended allot of that colour in. Most would be surprised at the colour hidden in there Greens, Purples, Blues, Reds, Browns and alittleYellow.. Using hue shifting I paled them into the overall gray look for the ship. It is that pale nature that makes them easy to disappear if you are not careful. But it also looks as though you shifted the whole texture including the metallic areas in one shot. The BurnessedGold and Bronze probably will need shifting back or in another direction, they would go to Yellow for the Blue look I think.