I've read several sites and even questions on here where the sky would appear almost white or light blue if it orbited an orange dwarf star. However, that is if the planet has the same atmosphere as ours. But what if it didn't?
From what I read, different amounts of gases in the atmosphere might make the sky appear to be different.
Given these facts, what if the atmosphere of this planet was 75.09% nitrogen, 21.95% oxygen, 1.40% argon, 0.14% carbon dioxide, 0.29% neon, and small amounts of other gases.
For comparison, the levels of argon and neon in our atmosphere are 0.93% argon and 0.001818% neon.
However, this is just an example. My figures might be off and the levels are either too high or too low.
Also, there are probably other factors that are necessary for the sky to appear orange while the planet orbits an orange dwarf star.
My question boils down to this: what levels of Argon and Neon, along with any necessary other factors, are needed for this planet to have an orange/reddish-orange sky while orbiting an orange dwarf star and still be sustainable for life?
Sustainable for life I mean for anything that breathes oxygen! Or in this scenario, a species that evolves on the planet and breathes oxygen.