Larry,
Rich is correct, the handle should snap up to the horizontal position when in the closed position. When you look at the geometry of the handle, you will see that it goes over-center in the last little bit of movement before it goes horizontal, and locks the vent closed. I would vote for an all black interior, but you need to do what pleases you! The problem that I ran into on mine was where to change the color. Don't forget that you still have the heater cover and package tray to install. I painted my center console red, but then realized that to make it look right, I would have to paint the heater cover red as well, and I just couldn't abide the red heater cover! I decided to lose the package tray on my car, since it never was very useful, and allways is getting in the way of passengers knees.
I finally just painted all the dash components to match the beige color of the dash pad, and I am glad that I did.
Regards, John McGraw