Linen Bandage

Source
This bandage is made by players with a First Aid skill of at least 1.

Linen Bandage as a quest objective
During the Gates of Ahn'Qiraj one-time event, the following quests were available:

First Aid

 * Turns yellow around skill level 30.
 * Turns green at skill level 45.
 * Turn gray at skill level 60.