Brown is most likely correct. At times it gets very hot on the moons surface, up to 120C in the sun for long extended periods without any rain ever, so the surface is sure to appear a bit baked.
Of course the dark side of the moon is bound to be a different colour/shade due to not getting baked or bleached
Meanwhile, we can now ask the question, how did the early astronauts survive 100C+ temps??
ETA:- Actually "baked" is probably not the most accurate term, instead we can safely assume that the surface gets 'Grilled' which tally's with the astronauts experience of what space smells like - "Burnt Steak"