Blue skies, a rainbow of strangers and lipstick shades weave through today's short documentaries about colour. Josie Long explores how it affects the way we experience the world.

Blue Featuring Laura Barton

Lipstick Featuring Davia Nelson Produced by Benjamen Walker

I Know Light Now Featuring Vanessa Potter Produced by Leila Hussain

Ring a Rainbow Produced by Dennis Funk

Series Producer: Eleanor McDowall

A Falling Tree production for BBC Radio 4 first broadcast in February 2018.