I had a friend do some photoshop magic for me to help me decide what look might be best when I put the old ETs on the blue '62. He dubbed in a blackwall tire and colored the spokes. 
So, since I respect your opinions, here goes. Take a look at these 4 selections: Natural, light gray, med gray and dark gray and let me know what you think. Try to imagine all 4 on the car.
Natural:
 
 
Light gray
 
 
Medium gray
 
 
Dark gray
 
 
Thanks! .........Decisions, decisions, decisions. 

 I'm kinda partial to the natural (old and un-refined as it is) but I'm curious what you guys think. 
Verne