By Elizabeth Hunter

Chameleons can change to yellow, orange, and black quickly - but struggle with green or blue, experts say.

Research found the flap-necked chameleon can match certain colors with greater accuracy and speed than others.

The study also revealed that, contrary to their depictions in popular media, chameleons cannot display patterns on their skin.

Researchers identified that the flap-necked chameleon can match yellow, orange, and black backgrounds with much greater accuracy and speed than those that are green or blue.

The study by ecologists at the University of Exeter carried out one of the first laboratory studies of its kind.

Dr. Jolyon Troscianko of Exeter’s Centre for Ecology and Conservation said: "Popular culture often depicts chameleons as masters of camou

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