">=</span> <span class="cn">NULL</span>, customColors <span class="op">=</span> <span class="cn">NULL</span><span class="op">)</span></span></code></pre></div>
    </div>

    <div class="section level2">
    <h2 id="arguments">Arguments<a class="anchor" aria-label="anchor" href="#arguments"></a></h2>
    <dl><dt>GC_chart</dt>
<dd><p>The gene chart object to be modified.</p></dd>


<dt>colorScheme</dt>
<dd><p>Optional; character or NULL, the name of a predefined
color scheme to apply to the genes.Acceptable