error in cookbook concerning colorbars?

Hi,

Am I right if I presume that line No. 4 in the second listing in
http://www.scipy.org/Cookbook/Matplotlib/Show_colormaps should read
(0.5, 0.1, 0.7) in order to match the description? But then, of course
the example plot would look different.

I hesitate to change what I don't fully understand ...

Christian