Take all I say with a grain of salt.
First, you may want to look at the sky chart I made many months ago as it directly answers your question: Terrestrial Exoplanet Skies – I've Built a Visual Sky Chart. Is it Correct?
Referencing that chart, it will probably look more similar to earth's sky than you would supposed. You're describing an atmospheric composition that is very earth-like. The biggest difference would probably be the low-atmospheric pressure. It would be like standing on a mountain-top on Earth (but more so) where the sky colors are noticeably darker due to less scattering of light. So all your colors will be darker (the sky will be less "bright" in color). The general principle is: Lower pressure darker colors, higher pressure more muted, "whited out" colors.
The other big difference is the red dwarf. You haven't specified what class of red dwarf (and this really matters) so I'll say that your sky would almost certainly be less blue (more white/grey component) than Earth's sky. This is due to less long-wavelength light reaching the surface. Though contrary to popular perception red dwarf light is still whitish light, it's just has less blue and more red wavelengths than Earth sunlight. If it's a really dim red dwarf (like an M8) your sky might take on a somewhat orange/brown tinge even at noon (due to sever lack of longer-wavelength light).
Noon: A darker, greyish-blue (maybe brownish-orange) at zenith getting whiter/grey towards the horizon. The sky overall is much darker in color than Earth's.
Sunset/Sunrise: Various colors depending on clouds and other factors (just like on Earth), but in general the spectrum will shift more red towards the setting/rising sun, and the sky on the opposite horizon will likely stay blue-ish but much much darker. Overall the main difference will probably be it's just a darker sky overall (thanks to the low atmospheric pressure).
If you have dust in the atmosphere, certain trace gasses, or other things than that could greatly effect appearance.
As for what it would look like from space... pretty much how Earth looks I suppose. I don't see a reason it would look much different, other than the landforms and oceans taking on a slightly more red-tinge. And I do mean slightly. There is less blue light making it to the surface, but blue light is not absent. It's the difference between a 3000k bulb and a 5000k bulb...noticeable, but not so much that your blues, greens, etc. completely vanish.