Help Finding a BLP File from the UI
 

I'm trying to find the BLP file for the red question mark icon on the microbar that has the character panel, mounts, dungeon journal, etc. With icons for spells and such I used the console and exported all of the art to my WoW folder but I can't find the microbuttons in there. I'm trying to find the art for the red question mark. I included an imgur link to help make what I'm asking for clear here:

http://imgur.com/a/RCQeH

Thanks in advance.

Got it, thanks.