de> 
to the final color <code>col_n = "white"</code>.  
Specifying different values for <code>n</code> and the 
initial or final colors yields different color ranges.</p>
<p><code>shades_of</code> is mostly a wrapper for a special <code><a href="usecol.html">usecol</a></code> command. 
However, <code><a href="usecol.html">usecol</a></code> allows defining more 
complex color gradients (e.g., by specifying more than two colors).</p>
    </div>
    <div id="see-also">
    <h2>See also</h2>
    <div class="don