I've been researching this color as I have been told be a few people that the photo on the right is Silver Blue Metallic. However, Y code for 1966 is Silver Blue (no metallic reference). I have seen lists where "additional colors" include Silver Blue Metallic and this is what I am being told the color on the right is. I've seen several mustangs this color but I've seen even more look like the color on the left. Does anyone have any input on a color code for the one on the right?

 

By the way, I am new here in every way. New to the forums and new to restoration. I just really like the color on the right. Thanks!