I've never seen a factory post sight unpainted either. Many folks (personal preference) prefer the black sight. I run black rear on many of mine that aren't equipped with night rear sights. Works for me.
In Memory of Paul "Dietrich" Stines.
Dad: Say something nice to your cousin Shirley
Dietrich: For a fat girl you sure don't sweat much.
Cue sound of Head slap.
RIP Muggsy & TMan
"If you are a warrior legally authorized to carry a weapon and you step outside without that weapon, then you become a sheep, pretending that JOCKO will not come today."