The whole corrosion issue really makes me think twice. Resale value isn’t a big deal for me since I plan to keep this one but I get your point. It sounds like going for a lighter aftermarket finish is the better choice to satisfy that desire without having new issues. I’ll start checking out hard chrome or Cerakote instead.It's a horrible idea.
One, corrosion. You'd have to be on top of it like white-on-rice.
Two, tolerances. Glocks are not target guns, of course. HOwever, you CAN hit with one...left stock.
Three, re-sale/trade. You'll TRASH that aspect of it.
There are numerous aftermarket finishes out there to make it 'whiter', light in appearance.
Hard-Chrome, or teflon-whatever, or even ceracoat. You just won't have the SHINE.