set_colors() not working for line collection


I have a script in which I have been using plot to plot numerous lines on
the same graph. I recently wanted to see how Line Collections work so I
tried porting it over. Everything successful except I can't seem to get
each line to be a different color. Here is the relevant section:

# Make a list of colors cycling through the rgbcmyk series.
  colors = [colorConverter.to_rgba(c) for c in
  fig = plt.figure()
  ax = fig.add_subplot(1,1,1)
  lines = collections.LineCollection([zip(L_range, item) for item
in a_steady])
  ax.add_collection(lines, autolim=True)
However every line is blue. Any ideas?