Here’s what director James Gunn had to say about the importance of yellow, color and Chris Foss’s work in Guardians of the Galaxy:
“Of all the Chris Foss paintings that inspired Guardians of the Galaxy, this may be the one that inspired us most. Yellow is an underused color in films, especially science-fiction and fantasy films. In Guardians, I used it as a signifier of change, rebirth, and redemption - the yellow prison uniforms, Drax drowning in the yellow spinal fluid, the yellow Groot spores, and the yellow interlocking Nova Corps net... I believe color is a part of what made Guardians successful. When so many huge, spectacle films have the beige color palette of Saw, the brain becomes thirsty for color. We were that Technicolor pitcher of water at the edge of the summer desert.
This doesn't mean all movies should be colorful, just that color in general is important, and too much of one thing is boring. If, over the next few years, films become oversaturated with bright colors, brains will be relieved by a film entirely hazel and gray.
Anyway, this painting, along with other Chris Foss works, was a part of my original presentation to Marvel when I pitched myself as director and I explained the visual direction I was going to take with the film. They were immediately on board, and we ended up hiring Chris Foss to help design some of the spaceships in the film. He was, of everyone, my biggest visual inspiration on Guardians.”