Hello again, Hi Ian / Dave. Regarding the mod, if you look at the casing along the length of the Missile compartment you will see the addition of some heavy duty plating covering the area from the waterline to the edge of the hatch covers. When you compare the older images earlier in the thread ( the ones with the tugs are best ) you will see the difference with the ones taken last week ( especialy the rear 3/4 view ). The vast majority of photos on the web are older pictures and dont show this fit. All V boats have had this extra plating added, its purpose is to strengthen the area around the missile tubes ( remember the USS Cole ) With ref to the colour of the hull take your pick they vary in just about every shade of grey from anthracite to med grey, the tiles age at diff rates and are replaced as they are damaged or fall off. I was lucky enough to get a tour of HMS Vengeance whilst she was out of the water in the ship lift at Faslane and would say that she was the same colour all over and not two tone as the painting guide in the kit shows. Sorry no photos as a strict no camera rule was in place. When I have finished my build I will post some photos that will show some of the detail that I obseved and am including in my model. Hope this helps, if anyone would like further images just drop me a note, great site by the way , looking forward to resuming my modeling.