The colour will suffer when using jpeg and auto white balance especially under low light conditions. This is evident in one shot where the dial looks amost blue. The only guarenteed way around this is to shoot in RAW and adjust white balance in Photoshop. There are however many other variables most notebly your screen settings but thats a long and boring discussion thats not worth having. I call these glamour shots which portray the watch in a moody environment and the true likeness eg dial colour, are not paramount. In record shots, you should aim for true representation including colour, condition and clarity - ahhh, the 3c's.
regards
Paul
www.heuerworld.com