Looks much like the paint shop service I've used around here. They mix and match the powders to the color of your liking, including the whole RAL pallette and put it in a generic spray can. Or cans suited for paintguns etc. choices. You should be able to find a service like that locally anywhere that deals with car decoration painting.
The service I've used here mainly deals with selling paint, but they will take up small decoration jobs too. I've had them paint a few panels, but most of the time I just buy the cans.