title: Change minor tick color in matplotlib
body: <p>when I want to change the color of the ticks in matplotlib I can use</p>
  
  <pre><code>ax.tick_params(axis='y', colors='red')
  </code></pre>
  
  <p>but what if I also want to change the color of the minor ticks.
  Can this be done easily?</p>
  
  <p>Thanks.</p>