H81A-2 /AVG interior paint

I am building a 1:48 Trumpeter Hawk . in regards to the part behind the seat and under the glass(fuel tank?) I am not sure what color to paint it. Instructions state ‘body colour’ paint guide states ‘interior green’ and to further confuse me the instructions state that field green for the cockpit. Poor instructions .should I go with body colour? like this plane?340px-Curtiss_P-40K_Kittyhawk