I started painting my Jet Stream rear bumper diffuser. I got the color-matched paint from AutomotiveTouchup.com. Today was mostly prep and primer. I sanded the gel coat on the entire part, then degreased, wiped off the dust and went to town with a bunch of painter's tape.
I taped off the outside part so I can paint the center to match the car; the outside will be matte black. In order to get a good demarcation line, I used some 1/4" pinstriping tape in the bottom of the groove between the two sections. Then I used automotive masking tape "for curves" to extend the stripe. Finally, I used good ol' blue tape to cover the larger areas.
I did several light coats of primer, sanded it down and then a final wet coat of primer. Tomorrow morning, I plan to get out there before it gets too hot and shoot the top color and clear coats.