Anything that goes with the colors allready is a good idea otherwise you end up painting everything like I did. Pewter would look good.

The other thing I was thinking about was did it get the haze right away or did the haze come up after wet sanding. If it came after wet sanding you can usually buff it out.

 

Id spray the paint and I could watch it turn hazy and gray as it dried, didnt even get to wetsand it

 

Sand alot of it back down, when you do the rest of the bare plastic, clean it well to get the oil off, then a coat of adhesion promoter, thats all you need. Let that get tacky, then dust it with primer, let it tack up, then again, dust it till it almost looks fully coated, then while it is still tacky give it the final even coat of primer, do the same with the paint. You don't want it to be 1 thick coat, but many thin coats, it will cure harder, look better. If you really want it to hold on, heat the pieces up with a heat gun, or dryer... I am not a pro, but do alot of spray bombing, on the hydro cylinders we rebuild, the customers can't believe that it was done with a can.. If it is done right you won't have to wet sand it out Hope that helps ya

John

 

clean it with a isopropyl alcohol "rubbing alchol" to get rid of the oils that come from you hands, also wear latex gloves or nitrile gloves when cleaning the parts.

 

use some 600 wet smooth it and get a quart mixed up at a local paint store and spray it

 

I recently did all my interior stuff with duplicolor as well. Make sure you have truck/van and suv from them otherwise it's a lacquer based paint and will turn dull like you have now very easy from coating too heavy.
Second if you have the right can just make sure you put light coats. Don't go heavy because goin heavy is what is causing it to do that.
Once you put a few light coats on it will be fine just don't go so heavy and it should dry properly.