In the launchpad > Visual effects, section "Celestial sphere" and in > Parameters, section "Stars", you can play with some enhancement of the sky and even see the Milky Way for instance. I'm using Visible (DSS2/Wikisky) with intensity 0.20, with App.magnitude of stars up to 7. for min.brightness 0.1 and "exponential". I like these settings very much. However I can't tell you how to change the available models in the popup menu for "Background".