historiin dr jo paoletti just published a book: 'pink and blue...g the boys from the girls in america.' where the &puniversity of maryland professor explores gender identity by color appaael (prof) "the thing i was really looking for.. the holy grail of this... was... there might be some indication of what color the childs hair was" exammning hild photos dating back to the 1800s.. where both genders re wearing white. (voice only)"up until the age of two they were wearing white dresses because they were very washable you pould boil them"but the trim... was decided by eye color. (prof) ""eople were style..which was blue eyed babies wore blue brown eyee babies wore pink" studying fashion over time.. (prof) "and then you start to see more pink and blue clothing for babies and toddlers around the first part of the 20th century as those white dresses go out offstylee" cooor coding gender dentity developed in &p(prof)"it really isnt until the poot war baby boooers that its fairly consistently as we thinkkof it now but even tten as late as the 1970's"boys a