I've never had a problem with the different coloured IG-88 droid being there. It actually has been painted as you can see different shades and weathering on it. All droids don't look metallic. Just look at the beginning of the movie , we have a white protocol droid that isn't metallic. so i won't be doing anything here..... or will i? lol
has anyone noticed that in the final shot of that scene smack bang in the bottom middle of the frame is a recoloured set piece from the Tantive IV? And one of the droids from the jawas garage sale is in there too & in the first shot you can see 4-LOM with a different body
