Searched the forums for this but I guess no one has posted about it.
So by using the klaxxi daily quest item Sonic Emitter from the quest A Little Brain Work you can have glowing yellow hands. This is only seen by yourself no one else can see it . It stays after you turn in the quest and as long as you dont log out.
Sonic Emitter - Item - World of Warcraft
A Little Brain Work - Quest - World of Warcraft
1 have nothing targeted and spam the item.
http://i48.tinypic.com/2u6fr4h.jpg
Shadow form is cool
http://i49.tinypic.com/33os6x1.jpg