I've not done a set of these wheels, but looking at the photo I think there may be a couple of ways to go about this.
First of all, no part of the wheel, except for the centre cap and lug nuts is chrome. Spray the wheel with your gold paint of choice, then remove the paint from the high point of the 'spokes'. Once the paint is removed, spray the wheel with matt clear to give the exposed chrome the machined aluminum look.
Removing the paint from the spokes can be done using a very fine point cotton swab (the type specifically for hobby use) or a toothpick dipped in paint thinner, etc. Work carefully and use magnification to ensure clean work. Another method would be to use liquid masking medium on the tops of the spokes before painting with gold, then remove the mask, but this may be a bit of a pain.
Whichever way you go, use liquid mask on the centre cap and lugnuts before painting the gold to preserve the chrome on these parts. Remove the mask after all other work is done.
Perhaps the most realistic method of all would involve stripping all of the chrome and lacquer undercoat from the wheels and use aluminum plate Metalizer and then gold paint, but it would require some experimentation on how best to remove the gold from the metalizer paint without damaging the metalizer.
These are just a few thoughts on how I would tackle this job. Hopefully others will chime in with their thoughts or experience.
