Ahsoka Tano after renouncing her Jedi-hood became an acting gray Jedi. Neither confirming or tossing off completely the force.

The is a lot of lore behind the colors of the lightsabers, and you can corrupt the kyber crystals with the dark side and make them red, but done can also be redeemed and turn white. I think she has one of those. But I'm not sure.