title: PIL images are saving in grayscale
body: <p>I'm trying to generate some fractal images and I can do it fine. However, I have some problems when saving the images, because it saves them in grayscale instead of the colours. When I open them in python, it shows the right colours.</p>
  
  <p>The code is as follows</p>
  
  <pre><code>from PIL import Image
  import ImageDraw
  from scipy import misc
  from array import *
  import matplotlib.pyplot as plt
  import scipy
  
  image = Image.new("L",(SIZE, SIZE)) # create a image SIZE x SIZE
  d = ImageDraw.Draw(image)
  #iterate over x and y, setting a col value for each pixel
  d.point((x, y), col ) # it then colors the point (x,y)
  image.save("beta"+str(alpha)+".png", "PNG")
  </code></pre>
  
  <p>I'm using macOS X, Python 2.7.5.</p>