I tried some a few years ago, the day sights.
I liked that the POI was the tip of the chevron instead of the combat hold of the factory sights.
That was when I discovered that not all Sig P229 9mm sights are the same and it was way off so I stuck the factory sights back on.
No one makes the sight combo it has so I just punched the easy button and swapped a P229 slide with a Romeo 1 on it for $325.
I have black rear sights on almost everything now.