Re: Colt 1908 Vest Pocket .25 ACP
It does look like aftermarket nickel plating. To a dyed-in-the-wool collector, refinishing destroys collector interest and becomes classed as a 'shooter'. That does not destroy desirability of it because it would be of serious interest to the average non-collector person.
As a gun to shoot or for protection it appears in VGE (very good to excellent) condition.