Sets the text color for a widget in a particular state.
All other style values are left untouched.
The text color is the foreground color used along with the
base color (see Widget.modifyBase) for widgets such
as gtk.Entry and gtk.TextView
See also Widget.modifyStyle.
the state for which to set the text color
the color to assign (does not need to
be allocated), or NULL to undo the effect of previous
calls to of Widget.modifyText.
Deprecated: Use Widget.overrideColor instead