&gt; If I think of South-East Asian traditional dress, I get an impression of oranges, yellows, and reds for the women (who do tend to wear the most colourful stuff).<p>Thanks for that info, I wasn&#x27;t aware of those traditions.  Indeed yellow to red is the range of hues that some human females might be able to discriminate better than males.  That is, the idea is females see these colors more distinctly or are more visually &quot;sensitive&quot; to these colors.<p>&quot;Pink&quot; is relevant because it&#x27;s merely red &quot;diluted&quot; with white, that is, lower saturation of a red hue.<p>No doubt cultural influences are enormously important re: attributing colors as symbols of gender identity.  I was only writing about the <i>possible</i> genetic&#x2F;biological factors contributing to selecting which colors are assigned to males vs. females, and such factors could certainly be quite secondary.<p>OTOH the info you contributed is intriguing because it appears to support the hypothesis I was referring to.