title: How to draw a rectangle with a colored border in gnuplot
body: <p>I would like to draw an empty rectangle in my plot. </p>
  
  <p>So far I have:</p>
  
  <pre><code>set style rect back fs empty border lt 3 
  set object 1 rect from 1,1 to 2,2 
  </code></pre>
  
  <p>And I have my rectangle with a dashed line. How do I change the color of the line? lc does not seem to work after border. I also tried with setting a new line style, and border but I was not successful. </p>
  
  <p>Thank you!</p>