title: gnuplot text color palette
body: <p>I am trying to set textcolor property of a label in gnuplot to transition through a palette of colours.<br>
  To be more precise, I want each letter of the label, say <code>"Number of Connections"</code>, to be a different color but following the color palette I specify.<br>
  I tried using the following method, but it failed, using only the color in the middle of the range for the string.</p>
  
  <pre><code>set palette model RGB defined ( \
  0 '#F46D43',\
  1 '#FDAE61',\
  2 '#FEE08B',\
  3 '#E6F598',\
  4 '#ABDDA4',\
  5 '#66C2A5' )
  set y2label "Number of Connections" textcolor palette
  </code></pre>