Create the three style elements CellContents, Header, and SystemTitle. Create the style element Footer using inheritance. The style attributes are defined in terms of the user-defined attributes that were created earlier in the style. For example, the foreground color in CellContents is set to colors("light") . Looking at the template of Colors, you can see that this is white. However, by setting the colors up in a style element with user-defined attributes, you can change the color of everything that uses a particular color by changing a single value in the style element Colors.

      style cellcontents /
         backgroundcolor=colors("dark")
         color=colors("light")
         font=fonts("cellfont");
      style header /
         backgroundcolor=colors("medium")
         color=colors("dark")
         font=fonts("headingfont");
      style systemtitle /
         backgroundcolor=colors("light")
         color=colors("bright")
         font=fonts("titlefont");
      style footer from systemtitle /
         fontsize=3;
      style table /  
         cellspacing=5 
         borderwidth=10;