I got tired of looking at the front hubs sticking out of the front wheels and empty holes on the back wheels. I didn't want to install the rear without the front.
I've looked and tried many different ways to solve the problem w/o any luck until today. I went to Advance Auto parts where my friend works and told him what I'm trying to do. We found a set of F-150 style hub caps with removable center caps. With my luck, the center caps fit perfectly. They snapped on the lug nut openings. I think they should stay on w/o any additional work, had to pry them off with a screwdriver, but I'll feel better with some kind of additional fastening.
I'm trying to decide what to do with the color, leave them as chrome or paint them flat black to match the wheels. BTW, i got the idea from using a coffee container lid.