span class="va">Plastic</span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="va">colors</span> <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/c.html" class="external-link">c</a></span><span class="op">(</span><span class="st">"red"</span>, <span class="st">"darkblue"</span>, <span class="st">"darkgreen"</span>, <span class="st">"brown"</span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="fu"><a href="heplot.html">heplo