If you take a look at the original interior shot you can see that there is a bezel in the dash that surrounds the factory stereo and beneath it is 2 heater/ac vents.
What I did was cut the bezel out of the original Lilliput casing to use as a mount, and then ripped the vents out of the center factory Jeep bezel and did a bunch of other cutting to make room to fit the Lilliput in the center. I filled part of the vent holes (the part not being taken by the screen) by epoxying scrap plastic pieces in them, and then used bondo to make the shape I wanted.
I had to block the 2 vents under the dash, which is fine because there are still 3 left. I didn't need 5 vents in the front anyway. Now the air just blows harder out of the other 3. I'm happy with it. I'll take a computer in my car over 2 extra vents.
Shakes, talking about this made me remember the name of that paint. It is made by Rustoleum and is called "Custom Interiors". It's flat black. Any hardware store should carry it I would think.
[Edit]Sorry, the paint is called "Painter's Touch" by Rustoleum. I went to the hardware store and tried to find the same paint and I couldn't find Custom Interiors.

Hehe. Couldn't find my own paint, lol. [/Edit]