X & Y (Coldplay) Easter Egg - Coldplay's X&Y Hidden Title Art

The random looking coloured blocks on the X&Y Cover are a really a form of telegraph code. The code, called the Baudot code, was used on telegraph machines before being replaced by Morse code. The blocks on the front cover read X&Y, while the back contains singer Chris Martin’s mantra and the name of his favorite non-profit organization: Make trade fair.