I hate those plain black front sights!!! What I have done to all my side lock rifles is put some hyglo paint on them.
I first put a small dimple on the back of the front sight with a drill. This will give a place to place a drop of the hyglo paint. I have not had to replace any of the paint drops and this has worked well for my old eyes.
Forgot to the main reason I did this to my sights. I was hunting a hollow one year towards the bottom. I wa on one side of the hollow and a buck was on the other. I heard it but it was still dark and could not see him. As it got lighter, I could just make him out after legal light but could not see my front sight. When I did I finally took the shoot. After the smoke cleared, I didn't see where he had run off to. I got out of my stand and there was no blood. Long story short because of the grey out of the early light, I didn't see the sapling between him and me. Killed the hell out of the sapling though.