Still no thanks on bears although they are cool. Ran into a huge grizzly in the Tetons some years back. Wasn't aggressive but just the size of it. It was doing exactly as you said, eating berries. It was actually crushing Berry trees by rolling.
Light never changes.
Rayleigh Scattering: Air molecules scatter short wavelengths of light (like blue and violet) in all directions. When the sun is low, almost all the blue light is scattered away before it gets to you.
Less blue