Fascinating: Red

Ahhh ha, so that explains it!

From Science a Go-Go (what a great name)...

Through five experiments, researchers demonstrate that the color red makes men feel more amorous toward women. Most surprisingly, men are unaware of the role the color plays in their attraction.

Appearing in the Journal of Personality and Social Psychology, the research provides the first empirical support for society's enduring love affair with red.

Although this aphrodisiacal effect of red may be a product of societal conditioning alone, the authors argue that men's response to red more likely stems from deeper biological roots.

Research has shown that nonhuman male primates are particularly attracted to females displaying red. Female baboons and chimpanzees, for example, redden conspicuously when nearing ovulation, sending a clear sexual signal designed to attract males.

The red effect extends only to males and only to perceptions of attractiveness.