Chrome Camouflage is a hidden camouflage in Call of Duty: WWII. It is obtained when Diamond is unlocked for all weapon classes in the game, similar to Dark Matter and Black Sky camos in Call of Duty: Black Ops III and Call of Duty: Infinite Warfare, respectively.
As with previous installments, it is not necessary to earn gold on weapons added via updates. However, if one wants to unlock it on DLC guns, Gold must be obtained first. After obtaining Chrome Camouflage for all 31 base weapons, the player will earn 10,000 XP.