Interestingly enough, pink was originally designated for boys. In the Christian tradition, red, and therefore pink, were associated with males and blue, associated with the Virgin Mary, was feminine. It wasn't until after WWI when blue had been used in military uniforms, that blue was considered masculine.
Based on today's modern catalogs, people still seem fairly attached to the tradition. We do notice a whole lot of bright orange showing up these days, which could be a good neutral color. What gender neutral colors would you choose?
Thanks again to Rachel for this great article! We only scratched the surface really- for the full story, (and loads of other interesting thoughts on color) click here!