The shape of the tan spots vary, but they look like watermarks or
birthmarks (kind of like water droplets that soaked into the skin). The tan color is very weak, does not stand out, and seemingly normal, but yet distinctly recognizable. The general pattern of the tan spots seems to go down the shaft of the penis, starting at the top of the foreskin covering the glans, down towards about 1/2 way down the penis. Most of it is on the dorsal side and some on the underside.