Supporting the Republic doesn't mean you are light sided.
Supporting the Sith Empire doesn't mean you are dark sided.
Supporting the Zakuul Empire doesn't mean you are gray.
Those are all internal practices, what you do externally may be a reflection of that, or it might not be.
Also said they were more like the Gray's, didn't say they were 100% hands down Gray, it's just an opinion based off of what we're seeing here champ