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Colour

Analysis and Comment (6)

Are you feeling warm or cold by the colours? Are you feeling warm or cold by the colours? Flickr/Joe

Is red warmer than blue? What colours can tell you

In a typical kitchen or bathroom you often find the hot and cold water taps labelled red and blue. It’s common practice in industrial and interior design in many parts of the world to present information…
Australian flowers and their pollinators have evolved a specific way of communicating – all based upon colour. Australian flowers and their pollinators have evolved a specific way of communicating – all based upon colour. aussiegall/Flickr

Colourful language – it’s how Aussie birds and flowers ‘speak’

In Australia, honeyeaters are far and away the most abundant and important nectar-feeding birds, so also the most important avian pollinators of flowers. What effect has their visual perception had on…
Them’s fighting words. And colours. Them’s fighting words. And colours. Megan Best

Colourful language: chameleons talk tough by changing shade

Humans have been fascinated by the colour-changing abilities of chameleons for a long time. Aristotle himself, the forefather of Western philosophy and also a keen zoologist, mentioned the lizard’s ability…
A soft-toned purple – just in time for Christmas. A soft-toned purple – just in time for Christmas. Stephen Dobson Photography

Meet Radiant Orchid, Pantone’s Colour of the Year

US colour swatch giant Pantone has picked a soft, rosy purple by the name of Radiant Orchid as the colour of 2014, displacing their 2013 choice, Emerald Green. According to Pantone marketing-speak the…
The plumage of male fairy-wrens is certainly impressive, but why is it so blue? The plumage of male fairy-wrens is certainly impressive, but why is it so blue? Ralph Green

Roses are red, ultraviolets look blue: why fairy-wrens have eyes for each other, not you

Why are some animals blue and others red? Explaining the diversity of colours in nature is a central issue in evolutionary biology. And part of the answer may lie in the most obvious place: the eye. In…
Brain scan technology is finding that some parts of the brain respond more strongly to colour than others. Brain scan technology is finding that some parts of the brain respond more strongly to colour than others. Flickr/dpi

Perceiving colour involves more than meets the eye

For more than 200 years, scientists have known the range of colours we can see means there must be three different types of light-responsive cells in our eyes. These three types of cell, along with the…

Research Briefs (5)

Mimicking butterfly wings

Iridescent surfaces such as opals, beetle exoskeletons and butterfly wings have unique colour properties due to their microscopic…