If you get yourself thrown into prison in the US or Switzerland, you may find that your cell walls have been painted pink.
This is because a particular shade of pink has been reported to calm us down and reduce aggression.
But does it work? And if so, how?
Baker-Miller Pink, also known as Drunk Tank Pink, is a strong shade of pink made by mixing a gallon of white paint with a pint of red. It’s not unlike the colour of Pepto-Bismol.
It had calming properties attributed to it in the late 1970s by Alexander Schauss, director of the American Institute for Biosocial Research in Tacoma, Washington.