Axiom did a custom match for my paint. I sent a picture of the lid of the paint can that had all the numbers they needed. If you go to the website and pretend to buy something, you will see the fields available to also enter the custom paint information.

M5HPv4 In-wall LCRs
M2v4 In-Wall Rears
M3v4 In-Ceiling Atmos
Yamaha RX-A3070