If it's your carry gun, I wouldn't think you would see it much. Wouldn't it be in your holster almost all the time?
If it functions good don't mess with it. If you are looking to spend some time and a little $$ on it go buy a box and visit the range.
The only mods I make are for functionality. I.E. Stippling grips, polishing feed ramps, polishing bolts on bolt rifles to make them function smoother.
If you do decide to take the bluing off, a 50/50 mixture of vinegar and hydrogen peroxide took the finish off a rifle barrel of mine like nobody's business (long story).