I've actually studied hair color, and you are absolutely correct in noting that blondes get the most attention. However, they tend not to garner the most respect. When corporations are initially hiring professional employees, brunettes seem to have an advantage. There are Asian blondes out there. The highly successful New Yorker writer Jia Tolentino, for example. All it takes is a bottle of bleach. When my hair went from golden to light brown just after college, I began to hit the colorist. There are very few adult natural blondes in the world, except in Northern Europe. But blondes do get noticed. Look at Beyonce and Taylor Swift! (Swift is a rare natural.)