I'm a light brown Mexican american as you know not all Mexicans are brown .
I would like to know . Can I add pics here
Maya civilization was in southern Mexico, Guatemala, and northern Belize, about 750 BC. Aztec was in central Mexico, about 14th to 16th century. The Inca empire was centered in Peru and eventually took over a large part of S. America, 15th and 16th centuries.
There is no particular appearance associated with what we know.