For colour, my daughter chose Volkswagen L345 Light Grey after seeing various photos of 1:1 online.
In between resolving small parts assembly, the next challenge was finding a paint supplier. Unfortunately, the outfits that specialize in ready-to-apply OEM colours for model cars, like Gravity and Zeropaints are all based overseas and cost a small fortune to ship here.
I went out on a limb (risk?) and ordered automotive laquer touch-up paint from PaintScratch. For touch up areas where a body shop would use an airbrush or spray gum they offer various sizes of primer, base coat, laquer thinner clear coat. They recommended one-to-one thinning and a 1.0mm needle for airbrush (wow... heavy pigment even when thinned):
The instrument panel served as a good test for the paint process. I used Grey Tamiya Fine Surface Primer, two light base coats follwed by one light clear coat. The 1:1 mix and 1.0mm needle worked perfect. I added a scratchbuilt "chicken handle" and rendered the grill openings in a word document, downscaled it and printed on clear decal paper. the ashtray lid is Bare Metal Foil:
Here's a mock-up of the primed, painted and slightly weathered undercarriage:
More to come... rocky roads lie ahead!