Theers a racing yellow, and I think theres a tangerine that makes a nice overspray yellow color.
Im not a master painter. Just remember, as I posted earlier, they will crack slightly at the bends if you flex them 90 degrees, just as FP said. However theres two saving graces.
The paint doesnt peel, just crack. And if you bent other knees that far, youd be repainting new knees
I bent mine and they cracked a bit, but from 3 feet away you cant tell they have tiny cracks in the paint.
This link has some colors. The yellow is a tad orange yellow. Like corvette yellow.
Its callec bright yellow.
Here are some 'airbrush paints'
TowerHobbies.com | Shop by Brand: Pactra - Paint - Polycarbonate
This daytona yellow is another color ive used. I think i overmisted with the flourescent orange or competition orange on thi same page. I would do silver, and then yellow/orange (light coats if possible) and then hand paint the creme around it in a acrylic.
That will mean less paint.