Ryan there is good news for you! For just $14.99 + shipping and handling, I will send to you the official sight painting kit. More than enough to paint a gazillion front and rear sight sets!
On a more serious note: Get yourself any color nail polish (or any other type of enamel paint) that you like. Clean the sight with acetone or other cleaner to remove any oil. Let it dry up before you go to the next step. Steady the slide/gun and use a toothpick to apply one drop to the sight where you want the paint to go. If you think that you can't get one drop into the recess, put a bit of tape where you don't want the paint. You may need to build up the coats to get the desired effect but the nail polish dries pretty fast so you can recoat in less than an hour. If you are really anal, you can put some clear nail polish over the white (or whatever color).
I've done this to just about all of my pistols that don't have either a fiber optic or night sight. Works real well.
On the internet, the number of posts do not correlate to actual knowledge.
The notch is supposed to be there as well as the bulge at the front of the frame!
You can't stop insane people from doing insane things by passing insane laws.