From my computer screen it appears that the P004-GR16 is the closest but others may have a different view. Realize that it indicates only having a gloss of 40% which may be too flat for your application.
Just a thought, but since you want to get closer to the original colors on the inside you may want to invest in the paint you plan on using and use that as your color sample to match against. That would give you the best chance of getting it right. You could buy a small amount to start with and run it over to the shop for a comparison.
Good Luck.
