Since you're asking about value, presume you're interested in more than just personal happiness with the revolver you're looking at. If so, yes, rebluing -- even from the factory -- in general will negatively affect resale value from a pure collector's standpoint.
From every other standpoint, a shooter's especially, it will likely have either a neutral influence or perhaps very sight bump. Do not expect, even under the best sales circumstances, to recoup the cost of the reblue.
If just for you and your personal happiness, and you're not concerned about resale, do what makes you happy.
Bear in mind, S&W's current bluing process is different and many feel inferior to the bluing yours got from the factory once upon a time. There are refinishers out there who can do it the old way, if you're so inclined.