Color Key (and Key Signature) in Film

I've always thought this video very beautiful and well done. From the dark evening sky, contrasted with loving warm and turquoise blues. There is something warm about it through the whole video. B major key, "the Artist". 

Somewhere warm, somewhere there are thunderstorms. This video is even warm (albeit in heart, and message) in its winter scenes. Go Sade. 

Skál!