Problem when attacking an NPC being blue, if you attack it, call guards, but do not become criminal, unless you kill the NPC, but if you turn off the warmode and the NPC hits you it turns gray for you and you can kill him without problem.
It happens the same with the players, if A attacks B, A does not become criminal, only gray for you, if you call the guards, he does not become criminal.
Problem when attacking an NPC being blue, if you attack it, call guards, but do not become criminal, unless you kill the NPC, but if you turn off the warmode and the NPC hits you it turns gray for you and you can kill him without problem.
It happens the same with the players, if A attacks B, A does not become criminal, only gray for you, if you call the guards, he does not become criminal.