had a look at the Bluebell's 6686 1935? 1st/3rd brake yesterday, unfortunately without camera... the light cream areas are light varnished wood framed in approx 2" dark varnished strip. The panels approximate to the level of the inner compartment window, beginning about 120 cm above the floor. They match approx the top of the compartment window, so for our purposes at normal viewing distances, I think we could get away with stick-on labels of milky/cream colour cut to size and stuck on a prepainted compartment section of dark brown. The sliding doors stand proud of the partitions and are of varnished dark wood.Even in this coach there are variations! The third class section has 1 panel between compartments, the 2 1st class compartments have a central darkwood pillar and vertical planking on the lower section! Almost too much information! The area below window level is mid-brown, hard to tell if that's what it should be or 70 years bleaching by the sun, assuming all of it's original. Beautifully restored and a pleasure to ride in, especially with the SECR C class in charge...