There are some OEM on ebay

http://www.ebay.com/itm/04-06-Chrysler-Jeep-Dodge-TOUCH-UP-Paint-Mineral-Gray-Metallic-Clear-Coat-PDM-OE-/321593674497?pt=Motors_Car_Truck_Parts_Accessories&fits=Model%3ACrossfire&hash=item4ae07a0b01&vxp=mtr
I bought one but haven't tried it yet. You might want to call them and ask

Good luck