title: Matplotlib: how to set line color to orange, and specify line markers?
body: <p>I have a situation where I have many lines that I am plotting in pyplot. </p>
  
  <p>They are grouped by color, and within each color, I plot according to plot style--so the circles, dashes, etc. </p>
  
  <p>My plot styling is: </p>
  
  <pre><code>plt.plot(x,y1,'b')
  plt.plot(x,y2,'bs')
  plt.plot(x,y3,'b--')
  </code></pre>
  
  <p>And then I repeat for various colors.  However, I am running into trouble with orange.  When I plot with orange, I get an error because pyplot wants to plot with circles instead of the color orange! Here is an example: </p>
  
  <pre><code>plt.plot(x,z1,'o')
  plt.plot(x,z2,'os')
  plt.plot(x,z3,'o--')
  </code></pre>
  
  <p>This fails because <code>'os'</code> is being parsed as two formatting instructions, rather than a color and the format: squares. </p>
  
  <p>How do I work around this in order to plot the orange lines?</p>