title: matplotlib: change title and colorbar text and tick colors
body: <p>I wanted to know how to change the color of the ticks in the colorbar and how to change the font color of the title and colorbar in a figure. For example, things obviously are visible in temp.png but not in temp2.png:</p>
  
  <pre><code>import matplotlib.pyplot as plt
  import numpy as np
  from numpy.random import randn
  
  fig = plt.figure()
  data = np.clip(randn(250,250),-1,1)
  cax = plt.imshow(data, interpolation='nearest')
  plt.title('my random fig')
  plt.colorbar()
  
  # works fine
  plt.savefig('temp.png')
  # title and colorbar ticks and text hidden
  plt.savefig('temp2.png', facecolor="black", edgecolor="none")
  </code></pre>
  
  <p>Thanks</p>