I wasn't aware about that EVA light. Let's find out where it was located. On the camera pole?
This pdf explains the interior and exterior lighting for the Apollo missions:
https://www.hq.nasa.gov/alsj/20090016336.pdf
Page 30 shows the EVA light.
The A17 crew commented on being cold during trans-earth coast and CC commented:
We're looking at - no need to
acknowledge this - we're looking at your temperature
problem. And there's a couple of obvious things
I'm sure you've undertaken, but if you haven't -
all the window shades off. Get some sunlight in
there. And might crank on all the lights to get
_ some more heat load in there. Also the - of course,
the cabin fan and the temperature - CABIN TEMP
control thumbwheel - It's your option on that.
In the lighting pdf you also see the window shades described. The crews were kept dark adapted at all times, and using the Sun as an internal light source was ruled out so as not to break dark adaptation and to avoid cabin overheating. Taking off the window shades would have been the first thing the astronauts would have done if it was cold, but made no comment on this CC suggestion. The Apollo 13 crew had a worse problem with cold after the power went down after the mishap on the way to the Moon, and there too it would have been obvious to remove the window shades but never mentioned doing so. Wouldn't have made any difference if there is no heat as well as light from the Sun out there. Circumstantial evidence perhaps, but again without any direct scientific measurement of the Suns heat in space we can not know.
Once he'd handed the TV in, he stuck his own feet down in through the hatch and, with Gene and Jack to guide him, got in without any difficulty. "Man, it's dark in here," he said.
Well of course, he had broken dark adaptation having looked at the EVA light even with the gold visor and would need a while to regain full adaptation.
And on the gold visor, here is CC warning Schmitt on the lunar surface about not wearing his gold visor:
CC Roger. You're probably letting in a lot of infrared
through that - without having that gold visor down,
too. That's sort of an infrared shield.
The lunar surface is bright in the band 1 near IR from emissions of solar UV/EUV excited surface olivine-pyroxine. This is why the lunar surface was mapped in the near IR by LRO, and also all of planet Mercury by Messenger. There are no visible light photos of Mercury from orbit.
That wavelenghth of IR heats the retina and can cause permanent damage with sufficient exposure.
“I think 99 times and find nothing. I stop thinking, swim in silence, and the truth comes to me.” -Albert Einstein