When you say they are still visible do you mean the paint color is different or is the repair lumpy. On older finishes this is how I fix them. Get a pint of you color paint in lacquer. Then go to an art supply store and buy a really small pointy brush. Dab paint into the chip a little at a time not going outside the chip. This may take 3 or 4 applications over a couple days to get the chip filled up. The next step is the hardest part. You need to get some 1000 grit sand paper and find something to back it with. I use one of those pressed sheet metal wrenches from a skill saw. Its only about an inch wide and has a 30 degree or so bend with a curved end. You want to sand only the newly applied paint (after a day or so to dry). Reapply touch up paint and resand until the chip is at the same level as the paint around it. Then buff the chip and surrounding area.
