@item @var{color}
Underline in color @var{color}, a string specifying a color.
-@item @code{(:color @var{color} :style @var{style} :position @var{position}}
+@item @code{(:color @var{color} :style @var{style} :position @var{position})}
@var{color} is either a string, or the symbol @code{foreground-color},
meaning the foreground color of the face. Omitting the attribute
@code{:color} means to use the foreground color of the face.