This is my baby, my gen4 glock 21 it goes everywhere with me, so I thought I would try color filling to give a gold inlay look. I think it looks damn good if you ask me.
On a side note I usually hate gold on guns, I was surprised how much I liked it.
I just used a paint pen and time and three coats, it was at Walmart over in the arts and crafts section just called color GOLD (1.97 each), it is not the model car paint most use. They had some really cool colors, even including the currently popular lime zombie green color. Sorry for the crappy picture.