Custom Stars and Flavor Text

I've been tinkering with my Dark Avatar game files and ran into a few dead ends.

First off, does anyone know if its possible to assign an appearance for a star in CustomPlanets? Say I wanted to give the Sol system a purple star, can I do that (without editing StarTypes and changing every yellow star to purple)?

I'd also like to know if there is a way to assign flavor text for a custom civilization. Even though I match up the civilization name and ID in the FlavorText file it still doesn't display in the game.

Thanks for any help you can provide.