Does the position of the sun in a hollow earth scenario affect the way light scattering would "color" the sky?
My understanding is the reddish-orange color during sunrise/sunset is caused by the sun being at a more oblique angle in contrast to the standard blue when the sun is fully up.
My intuition states that the sky's color wouldn't change much, or if it did would become a washed out version of whatever it normally would be, ie blue on Earth. The most dramatic coloring that I could imagine would be a gradient from say blue to red as you look from the center of the sky to the horizon, given an Earth colored sun and atmosphere. I doubt the gradient scenario is possible, but it would be neat if it was.
Of course a true hollow earth situation isn't possible. I'm mostly interested in how light scattering works when the light source is placed in the same setup.