The important of your level in Shaiya
The color of a mobs name is not just to make it look pretty; it is to inform you what level that mob is in relation to your own level in Shaiya. In PvP all enemies have red names and there is no way of knowing what level (shaiya gold) an enemy player is. But for PvE it goes like this. The higher the level of the target the more exp you gain, but the harder it is to kill.
A white named mob is levels (shaiya money) 6 or more levels below you. You gain no exp for killing them. A light blue mob is 4 or 5 levels below you. A dark blue mob is 2 or 3 levels below you. A green mob is the same level or within one level of your own. A yellow mob is 2 or 3 levels higher than you. An orange mob is 4 or 5 levels higher than you. A red mob is 6 or 7 levels higher than you. A purple (pink) mob is 8 or 9 levels higher than you. A gray mob is 10 or more levels higher than you.
The level difference is a huge part of the game in terms of what it does to the performance of your character. There are penalties involved when facing a higher level target. Against a green mob, which is the same level as you, there are no penalties. You will do your full damage and get hit for its full damage. Your hit rate and what not will all be unrealized. In terms of damage, you won't hit a white mob for more than you hit a green mob, all other things being equal. But in terms of defense and dodging ability, you will perform better against lower level targets. Because by being higher level than it, the mob is now being penalized in accuracy and damage etc. That being said, when you fight a yellow mob, you are being penalized in your damage ability and accuracy etc. even more so with orange, red, purple, and gray. The bigger the level difference, the more you get penalized.
