title: Bokeh line graph, Is there a way to set the line color as gradient?
body: <p>I have a very simple spaghetti graph like this:<a href="https://i.stack.imgur.com/oVfhq.png" rel="nofollow noreferrer">enter image description here</a></p>
  <p>I would like to set the line color as a gradient.
  Does anyone know whether this is possible or not?
  I searched for an hour but could not find any solution...</p>
  <p>Here is a part of my code:</p>
  <pre><code>p = figure(title=&quot;stabilogram&quot;, x_axis_label='time', y_axis_label='position', plot_width=900, plot_height=900)
  p.line(x='posX', y='posY', line_width=2, source=df_trial)
  show(p)
  </code></pre>