There were before we pulled out of Iraq in DEC '11. The only ones left in the ME are in A'stan, one USMC Company (14 tanks) of which all were sand last time I saw them.
The US Army and USMC did not repaint their vehicles when they were sent to the ME.
There still may be some NATO camo tanks in Kuwait as we are now going back to having at least a BDE there as opposed to in Iraq. They may just draw PrePo stuff as we used to before the invasion in '03 on training rotations there. If so, all the PrePo vehicles are sand.