If possible locate the local paint supplier to the body shops in that area and see if they have access to camera that can analyze paint color on car and get a match that way.
the paint supplier's sales people should know who the painters in that area are that know what they are doing and willing to work in conjunction with you and the paint supplier to get the repair done.
I agree with the above keeping it small as possible. I assume repair area is below horizontal body line below marker lamp? Side stripes or no side stripes?
Any good shop should have the camera and their own mixing system.
