I bought a pair of bumper plugs from
http://bumperplugs.com/BPindex.html, which I never ended up using. I recently replaced my entire bumper, so I no longer have a need for the plugs. Paid $33 for these, but willing to give them up for $20 shipped if anyone wants them.
The plugs are alpine white in color, they will fit any car. Brand new, unopened packaging.