Today I had time to paint the octagon ports.
After a light sanding with 400 grit sand paper to smooth out the primer, I applied some of the precious Rustoleum Metallic Purple remaining in the can.
So far, so good.
Next up, Duplicolor Anodized Blue, applied about 15 minutes after the purple.
And finally, two clear coats, each applied another 15 minutes after the preceding coat.
About an hour after applying the second clearcoat, I removed the masking tape.
These seem to have turned out well. I'll let them dry a day or two, and then work on getting them installed in the droid.