From cavewoman to Zaha Hadid
Traditionally, women have been found to make better drawings, neater sheets and more attractive designs than men. And men have been found better in areas involving construction, structures and engineering.
While women experimented with colors, men played safe, sticking to the shades of greys and blues they dressed to office in. So you had more women in the design studio, more men on site. For color schemes, architects would consult their stay-at-home wives, and the clients would consult theirs.