Here's what I do on my guns. I like florescent orange front dots. I take a very small drill bit and hand twist it on the front sight dot. This will remove the white color of the front sight dot. Go buy some florescent green testors model paint. Take a tooth pick and put a small drop of paint in the hole. If you get a little to much you can wipe off the excess with a paper towel. You will now have a green front sight.