Beauty, yellow underneath as well. Faber landed on June 29, '42 and the aircraft first flew with the RAF on July 03, '42. In the "British Aviation Colours of World War Two"...
A.513---Camouflage Colouring and Markings of Aircraft dated (10.7.41), the caption says,
3. R.A.F. landplanes.---(i) Operational aircraft for service at home---(a) Temperate land scheme consisting of two colours, dark green and dark earth, is to be used for the upper surfaces of all aircraft, except for those mentioned in sub-para. (c) below.
That would seem to fit the time period here