A couple weeks ago, I re-watched the
Star Wars: Rebels episode "Legacy of Mandalore" (S3E16) and noticed some significance in a few design elements. The episode starts with Sabine returning to her family home on Krownest where she doesn't receive a warm welcome. Her ship is shot down, and her mother's first words upon seeing her are, "So, it's true, then. Put her in a cell; she'll be held for trial."
The environment of Krownest is predominately black and white:
Consequently, Sabine's brightly colored hair and armor really stand out:
This contrast mirrors the characters' relationship. Sabine doesn't fit in with the palette of Krownest in the same way that she's not fully accepted by her family.