The perceived color of the lunar surface varies depending on the sun angle at the time. Apollo astronauts have talked about this.
Apollo 11 CMP Michael Collins said, "One of the few mysteries from Apollos 8 and 10 involves the color of the surface of the moon. Eight had said simply black-gray-white, while 10 had said black-brown-tan-white, and we are to arbitrate the issue. We have discovered a bit of truth on either side of the argument -- it seems to depend on the sun angle. At dawn and dusk, we have to vote with the Apollo 8 crew. It is dark gray, with some white, but no other colors -- a monochromatic plaster of Paris. On the other hand, near noon the surface assumes a cheery rose color, darkening toward brown on its way to black night. We vote with Apollo 10 in the late morning and early afternoon." Carrying The Fire, page 399.
Apollo 17 CMP Ron Evans said, "There are changes in the color of the Moon as you traverse from sunrise to sunset. At sunset...you think the Moon is brownish. Then the brownish gets lighter brown, and pretty soon you get over to high noon...And you look out there and it's bright, bright, really, really bright." Voices From The Moon by Andrew Chaikin, page 42.