Derived from <a href="//commons.wikimedia.org/wiki/File:Color_icon_gray.svg" title="File:Color icon gray.svg">Color icon gray.svg</a>, this “gray icon” shows a broader variety of gray. Self-made.
Mizunoryu, Badseed, Jacobolus
Derived from <a href="//commons.wikimedia.org/wiki/File:Color_icon_gray.svg" title="File:Color icon gray.svg">File:Color icon gray.svg</a>, with colors changed to reflect a broader set of "grays"