being a photographer i may be able to help you work photoshop to get the colors more accurate. Try doing "auto levels" that should set it to what the comp thinks should look best. If that doesn't look good (which it may not, its odd for tank shots sometimes) you can manually ajust using the "levels" setting. Also you can work with the color ballance, or even break it down to the RGB and adjust each one of those manually, i forget what that one is under but i believe in your layers pallet it should be one of the tabs you can switch between.
If i can help anymore lemme know