AT&T Brand Guidelines at a Glance 20 Incorrect Arc Use The examples below demonstrate incorrect use of arc(s). Do not combine multiple vibrant color arcs. Do not use arc(s) that do not match the background color. Do not combine multiple vibrant color arcs over imagery. Do not combine vibrant color background with vibrant color arcs. Do not combine vibrant color arcs with solid color arcs. Do not place imagery in the arcs. Do not use a transparent vibrant arc over imagery. Do not place fields of color randomly. Do not use accent colors for arcs. Do not overlap products or silhouetted photos on the top arc in two-arc layouts.