Thanks for the ideas, everyone.

This grommet on the assembly in this e-bay auction appears to be red:

http://www.ebay.com/itm/1970-Cuda-Challenger-Barracuda-Emergency-Brake-Pedal-Assembly-/262375414165?hash=item3d16cb1995:g:sZIAAOSwx-9Wtm5Q&vxp=mtr#ht_25wt_1153

I've been told they were originally black, is this the case?