The village has one priority, and that is to kill the mage. An elven villager shouldn't care that he's killing an elven mage. He only sees them as the mage, the enemy. Just goes back to baerinika, and how she see's you killing a mage of hers really. How would the other villagers feel if you didn't kill any mages of the light? Do you think you wouldn't have a problem with them? You lose their respect, and they'd want you kicked out.
I'd like to roll a goodie villager, but I'm sure I'm on the short list of being kicked out of the village.