XColor *bgColorPtr;        /* Background color (intensity
               
  * between lightColorPtr and
               
  * darkColorPtr). */
    XColor *darkColorPtr;    /* Color for darker areas (must free when
               
  * deleting structure). NULL means shadows
               
  * haven't been allocated yet.*/
    XColor *lightColorPtr;    /* Color used for lighter areas of border
               
  * (must free this when deleting structure).
               
  * NULL means shadows haven't been allocated
               
  * yet. */
    Pixmap shadow;        /* Stipple pattern to use for drawing
               
  * shadows areas.  Used for displays with
               
  * <= 64 colors or where colormap has filled
               
  * up. */
    GC bgGC;            /* Used (if necessary) to draw areas in
               
  * the background color. */
    GC darkGC;            /* Used to draw darker parts of the
               
  * border. None means the shadow colors
               
  * haven't been allocated yet.*/
    GC lightGC;            /* Used to draw lighter parts of
               
  * the border. None means the shadow colors
               
  * haven't been allocated yet. */