Not the kind you might think.
These films have enchanting nuances of the colour blue. I make it my hobby to look out for blue movies. They cheer me up. If you know of any, please let me know.

My favorite, Fur:

The star studded Red:

The subtle Henry Poole is here:

The great Darjeeling Limited:

The Awesome Life Aquatic:

The funny Management:

The surprising Crazy on the Outside:

The cheerful Mamma Mia: