You're missing the basic idea of the paladin, I guess. From the PHB:31. while it's good to see that paladins aren't restricted to lawful good (or any other alignment), it seems that the tenets of all paladin oaths are geared toward good characters. am i missing something?
and:Whatever their origin and their mission, paladins are united by their oaths to stand against the forces of evil.
A paladin swears to uphold justice and righteousness, to stand with the good things of the world against the encroaching darkness, and to hunt the forces of evil wherever they lurk.