Painting the sights I guess is one of the things to do.
I showed my Dad my new mk II, he took it and grabbed his white out and slabbed some all over the front sight! I started to say stop, but then figured he knew better than me. It does help because it is a darker blue frame and sights, so really brought it out.
No big deal, I can always take it off, but I won't.
Enjoy your new Ruger.