Anna Boden & Ryan Fleck on film's opening scene, inspiration, chemistry
The writers/directors of the film talk about the inspiration for their film, how they got that tracking shot in the casino where Ben Mendelsohn and Ryan Reynolds meet for the first time, how rainbows became significant for the film and gambling themselves in casting Reynolds and Mendelsohn.
http://moveablefest.com/moveable_fest/2015/09/anna-boden-ryan-fleck-mississippi-grind.html