1. Removal of inserts:
Take a flathead driver (or equivelant) and pry them off GENTLY, being careful of the paint. Use something with a less harsh edge if you are worried about the paint. Use leverage from the grille to pop them off one clip at a time, starting from the outer ones and working in. Be careful not to break them, they are plastic.
2. Prep work
Start by sanding with a mid-grit, removing the chrome layer. After youre done they should look like smooth aluminum. Take your time and keep it even and smooth.

Next clean the inserts with soap and water and be careful not to get oil or grease on the surface to be painted.
3. Primer
Get a good auto primer (plastic works too) and make sure it is wet sandable. Shake the can up and lay on 2-4 light coats from about 10" away. See can for dry-time between coats. For best look and max smoothness, wet sand in between the last couple coats, but make sure you let them dry for at least a few hours before doing this. Allow the primer as long as possible to dry (using quick dry worked good and allowed me to paint the same day as prep).

4. Paint
Sand the primered surface nice and smooth, then clean it with soap and water again and get ready to paint. Start by doing a few light coats, letting each dry for 10 mins or so. I did 4 coats i believe, each about 10-20 mins apart. Allow 24 hours to dry for best results.
If the paint doesnt look quite right, or if it looks a bit thin, do the above step over again, but only do as many coats as you feel necessary. Feel free to wet sand between before respraying to smooth the surface. I suggest 1000 or so grit so as not to damage the paint so far.
Allow 24 hours of dry time before next step.

5. Clear coat
After dry-time for the paint, get a good auto clear coat and apply after LIGHTLY sanding the surface with a very fine paper, like 2000.
If the paint looks ready to go, apply 2-4 light clear coats, and allow another 24 hours to dry. If needed, wet sand with the 2000 grit once more afterwards to smooth things out. All done!
Ill have finished pics up soon, as soon as i get a sunny day! good luck