verse.org/reference/aes.html" class="external-link">aes</a></span><span class="op">(</span>colour<span class="op">=</span><span class="va">leaf</span><span class="op">)</span><span class="op">)</span><span class="op">+</span> </span>
<span>  <span class="fu">viridis</span><span class="fu">::</span><span class="fu"><a href="https://sjmgarnier.github.io/viridis/reference/scale_viridis.html" class="external-link">scale_color_viridis</a></span><span class="op">(</span>discrete<span class="op">=</span><span clas