Harrison, have a look at Geedee's thread on his P51 cockpit. It's a 'D', but the layout and colours were basically the same.
The only wooden bit was the floor, which was plywood, sometimes clear laquered, sometimes painted, probably scuffed.
The armour plate behind the seat on the 'D' was the same Interior Green, with the top part, around the head rest, black or very dark grey, with a dark brown leather head rest pad. The seat was normally Olive Drab or Medium Green, although, like Gary's, Interior Green seats were not unknown. Note that Gary's 'pit has yet to have the trim wheel and landing gear lever added to the port side pedestal.