The way he uses color

As an artist, it's so interesting for me to see all of his work because you have that range of color. If you watch Trainspotting, it's very gray and bleak and then watch Slumdog or 127 Hours and you have such vivid use of it.

At first, I thought he was changing his style and then I realized that he is truly an artistic visionary, using the color to set the mood and tone of the film.

28 Days Later and Sunshine are also a good examples, well all of his work is.

Your thoughts on his color-palette?
His choices and how do you think they add to the overall look and feel of the film?
How they change the audience's perception of the film and if you think it makes that much of a difference?
How do you think the films would be interpereted with a different color scheme or no color at all?
How does it shape a film?

I think he is one of those directors that truly understands colors and how they work against each other.

Where is fancy bred? In the heart or in the head?