I'm fairly new here so just started checking out this thread and think you made a "Great" Choice" on the color scheme
I'm guessing Red Calipers??? But the Pewter with the darker Charcoal on the hood with the red is a great choice!! Subtle, mean, and elegant! Might be cool if you match the wheel spoke shade with the dark Charcoal on the hood but then again, the black adds an additional element of color.
Glad you really thought things through and took your time as hard as that can be!