Second lance I repainted in canon colors: the Free Worlds Guards of the Free Worlds League. I went with which color schemes I liked best, not the best names.
The Free Worlds League is really more of a loose confederation of various duchies and individual worlds that united for mutual defense. They are, canonically, paralyzed by this lack of centralized leadership, with the various near-sovereign political bodies constantly bickering and countermanding each other. The only time the FWL can effectively unite is when House Marik, one of the setting's five Great Houses, takes over and forms a military junta. They're the most ethnically/religiously diverse of the Successor States, and are genuinely depicted as rather benign. Still ruled by nobility, and its constituent states range in practices and freedoms of its worlds.
Honestly know the least about this Great House/Successor State, and very little about this military unit. I just liked the color scheme.