There's a supermoon lunar eclipse ongoing right now (Sept. 27/28, 2015), and it got me thinking that a great way to show to people why the Moon is reddish -- when eclipsed by the Earth -- would be if we have a color photograph taken from a spacecraft in the general vicinity.
Such a photo could be taken from the Moon while the Moon is being eclipsed by the Earth (which just takes some careful or lucky timing), or from any point in space opposite the Earth (between the Earth and the Earth-Sun L2 point) where the umbra of the Earth still exists. I do know that at the L2 point the Earth is not large enough to cover the Sun, so L2 is too far out, and we also need to get far enough from the Earth to be close to the distance of the Moon's orbit in order to capture the atmospheric ring of dim refracted red light.
I think if we got lucky with the timing of any of the manned lunar missions, somebody would have thought to photograph a lunar eclipse event, but it feels like if this happened, I would already have seen the photograph by now. Since it seems like we have no Apollo pictures, all I can hope for are pictures from spacecraft flybys.
Also, this would be a fantastic thing to work into the planning for the next manned lunar missions, I'm looking at you NASA. :)