Colorbar frame

Hi Matplotlib users.

I’ve been fiddling with colorbars a bit today and having a bit of difficulty with the borders.

Take, for example, subplots_adjust.py: it makes nice colorbar up the side of the image. But there is a black border, plus numbers, around the colorbar. Is there an easy way of getting rid of the border, just leaving the blue to red scaled colorbar?

Matthew