Frame, underside, roll bar color ??

[67 455 Bird ragtop]

Ok. I’m coming to a point of no-return, sort of. I’m having car blasted on Friday. I’m having the frame, roll bar, and floor pan blasted. Then I can clean and prime it this weekend. Then the decision needs to be made. How to paint the frame, underside, and roll bar?
My current thought is to paint the frame, chassis, underside, and floor boards black. I’ve already had most if not all of my chassis parts powder coated black anyway. Then paint all the other paintable surfaces the same blue as the body. That includes inner fender wells and their supports, core support, all the other sheet metal pieces in the nose of my ‘Bird, firewall, roll bar, and dash the same color as the body.
The other thought is to paint the frame and under carriage blue but leave the chassis pieces black and stuff already powder coated black. The only non-chassis pieces I have had powder coated are the motor and trans mounts.
Attached are a few of pictures of the blue I plan to use. This is not my car but the car I took my color from.
Any thoughts or suggestions ??