lkaline earth metal"</span>, <span class='st'>"halogen"</span>,
  <span class='st'>"metal"</span>, <span class='st'>"metalloid"</span>, <span class='st'>"noble gas"</span>, <span class='st'>"nonmetal"</span>, <span class='st'>"transition metal"</span>)
<span class='no'>colors</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/base/c.html'>c</a></span>(<span class='st'>"#a6cee3"</span>, <span class='st'>"#1f78b4"</span>, <span class='st'>"#fdbf6f"</span>, <span class='st'>"#b2df