Here's what I plan on doing to mine.
1) Find some white nail polish. I'm sure there has to be some somewhere...probably some teeny-bopper store or something.
2) Go to
www.glowinc.com and buy a small bottle of their super glow paint, apply on top of white nail polish.
3) Get clear nail polish and seal the glow paint.
As far as drilling a dimple in the front sight, it's not going to get you more surface area, so I'm not sure of what that brings other than possibly keeping the paint on longer. Maybe since it's smaller it'd be slightly more accurate, but I'm primarily concerned about acquisition of the sight.
ps...I'm not knocking ccoorreeyy's pistol, just a "poor man's approach."