<span class="p">[[</span><span class="o">-</span><span class="mi">1</span><span class="p">,</span> <span class="s1">&#39;#0000FF&#39;</span><span class="p">],</span> <span class="p">[</span><span class="mi">1</span><span class="p">,</span> <span class="s1">&#39;#FF0000&#39;</span><span class="p">]]</span>  <span class="c1"># custom colorscale</span>
  <span class="n">fig</span> <span class="o">=</span> <span class="n">pd</span><span class="o">.</span><span class="n">DataFrame</span><span class="p">(</span><