Spanish colonization in the U.S. centered primarily around the areas now forming the states of California, Arizona and Florida. One color used in Spanish Colonial architecture and found primarily in Arizona was the iron oxide-rich coral pink color of Navajo Sandstone. Zion National Park in Arizona is home to some of the most otherworldly formations of Navajo sandstone found in the U.S.
In California, the popular Spanish Colonial Revival architectural style features whitewashed stucco walls and red tile roofs. The style is so popular in California that one town, San Clemente, has building codes prohibiting the building of any home or commercial building in a form of architecture other than the Spanish Colonial Revival style.
Not all Spanish Colonial homes had stucco walls. Many had adobe plaster or brick walls of dried clay and mud. Though sometimes whitewashed or colored with natural pigments, adobe walls were more often left in their natural shades of grays, browns and reds, depending upon the type of mud or clay used.
Though characterized by muted earth tones, Spanish Colonial homes are by no means limited to a boring color palette. According to archaeological records found in Florida, the exterior walls of Spanish Colonial homes were also found in dark blue, a light yellowish-gold color known as ochre and a deeper mustard shade of yellow.