rker (or lighter, or saturated)</li>
<li>
<code><a href="reference/color2gradient.html">color2gradient()</a></code> - split one color to a gradient of <code>n</code> colors</li>
<li>
<code><a href="reference/showColors.html">showColors()</a></code> - display a vector or <code>list</code> of colors</li>
<li>
<code><a href="reference/rainbow2.html">rainbow2()</a></code> - enhances <code><a href="https://rdrr.io/r/grDevices/palettes.html" class="external-link">rainbow()</a></code> categorical colors for visual