His biggest innovation was to change the background colour.

ECONOMIST: Roman Opalka

This pattern of digging for information, background and colour went on till late each evening.

BBC: By BBC News Online's Bob Eggington

Rather than indicating hair colour, educational background or height, suitors tick boxes indicating geographical or industrial desires.

ECONOMIST: Matches made in heaven

There is little doubt that the latest revelations will add more colour to the prime minister's background.

BBC: Leaders love to be interesting