Hi , me again
I guess it would of been easier to just go the the basement and check my collection. I have two Finemolds Judy's. One of them is strictly in Japanese. The other is in ENGLISH

. It states the cockpit interior to be IJN Green (Nakajima) With the padded pilot seat being a dark flat blue. Strangely enough there is no colour reference for the wheel wells.
To add to your dilema, The late war Grace B7A, and the B6N2 (Jill) have differing wheel well colours. The Grace having the interior yellow green and the Jill having the Aotake.
My Edit... I've found the interior wheel well landing strut door colour for the Finemolds Judy, it's stated as IIJA Gray, while the exterior of the door is IJN Gray (Mitsubishi)