We installed the Arlington lock in the late 90's.   After a few years it started to become discolored.  It became pitted and had greenish spots.  Although the pictures show some sun on it, it's actually under a covered porch.  It's now very unappealing.  The Website says that the finish is covered under the LifeTime Warranty.  BEWARE - Kwikset doesn't cover older locks.  Either don't buy one or make sure you have yours replaced right when it starts to tarnish.   We waited until now as we're preparing to sell our home.  This is highly disappointing we are excluded from the warranty coverage.