I explained that we could, for example, see the true colors of nebulae such as the Orion Nebula, which we can see in shades of grey from Earth. This would make people aware that telescope photographs are not necessarily in the visible light domain.
The nebula is not gray though, it only appears that way to the naked eye due to the limited sensitivity of human photopic vision. A normal consumer RGB camera, which sees the same wavelengths as the human eye, does not have this limitation and will accurately record the true blue and pink colors of the nebula. This is what SE represents. Dim stars are desaturated to simulate human vision, however, and perhaps in the future more options could be added like this. One problem with depicting human vision on a typical computer display is that most LCD screens cannot show anywhere near the same range of brightnesses and colors that the human eye can see, so if you try to represent the dynamic range of the human eye on a monitor, everything will appear to be extremely low contrast and washed out. There are probably some clever techniques that could be applied to make it look subjectively good, but it would still not be accurate.
How does the lighting work in SE?
Objects are lit by up to the four brightest light sources within the same system hierarchy, be they stars, planets, or moons. Bright nearby stars, nebulae, clusters, etc. do not currently contribute to object lighting. Such things are planned though.