Looks like it's done by the guy behind Phresh Paint. https://www.facebook.com/PhreshPaintMinis. He's got a video of him painting some stuff under his video tab (it's the very bottom one of the list) with spray cans. He's does a lot of the paint jobs for Miniature Scenery who make the building in the first photo there as well as the dumpster and Garage sign in the last.
Yep! That's him! He should be able to help huge, @Belgrim ! Check out his stuff - it's pretty impressive. Thanks @Monkeysloth
When it comes to painting terrain with a brush, just get the craft paint from the craft store. $1 for 2oz of Apple Barrel is much better than using up all your expensive Vallejo.
There are some AWESOME spray paints by Liquitex. Here are the links. The opacity and brightness are beyond compare afaik. http://www.liquitex.com/us/Shop/paints/professional/spray-paint/36093/
