ST. PETERSBURG â Bold diamond shapes, dominant stripes, and eye-dazzling zigzags in brilliant colors are just some of the design elements seen in the stunning artistry of Navajo textile art from the 19th century. In âColor Riot! How Color Changed Navajo Textiles,â a new special exhibition, individualism and a flair for experimentation of Navajo weavers are vividly expressed in textiles starting from the last decades of the 19th century. During this time, weavers acquired new materials, such as vibrant aniline dyes and complex Germantown yarns. These colors, combined with examples of the design system of Hispanic textiles, touched off experiments with color and design in Navajo weaving that were unprecedented.