MuOnline Damage Colors

RED – it means that you dont have SD anymore cause it hits directly to your life.
LIGHT BLUE - ignore damage, you can see this option in 2nd wings and 3rd wings
BLUE – critical damage rate, you can have this damage by obtaining items that have luck, (weapons, wings, sets)
GREEN - poison damage
PINK – reflect damage, when you’re wearing an item that has reflect option on it, the attacker that damages you will get a reflect hit according to the total percentage of reflect items you have.
LIGHT GREEN - excellent damage rate, you can see this options in weapons, pendants, and ancient sets.
10% means you have 10% chance to cast an excellent damage basing how many excellent items you have equipped.
YELLOW - SD damage