" aria-label="anchor" href="#details"></a></h2>
    <p>See <code><a href="fu_0_2023.html">fu_0_2023</a></code> for the two primary colors and 
the <code>ac</code> or <code>usecol</code> functions for creating 
alternative color gradients.</p>
    </div>
    <div class="section level2">
    <h2 id="see-also">See also<a class="anchor" aria-label="anchor" href="#see-also"></a></h2>
    <div class="dont-index"><p><code><a href="fu_1.html">fu_1</a></code> to <code><a href="fu_4.html">fu_4</a></code> for new colo