Mars: a Different Palette

The Martian sky flips Earth's color scheme. By day it looks butterscotch or pinkish-tan; at sunset it turns blue instead of red. Why? Mars has a thin atmosphere loaded with fine iron-oxide dust. Those rust particles preferentially absorb blue light and scatter the remaining longer wavelengths, giving the daytime sky its warm color. At sunset, the same fine dust forward-scatters blue light toward you while red scatters elsewhere. Same broad scattering physics as Earth - but a different atmosphere produces an alien palette.