Axis attributes are not correct

[AlbertoPdRF]

Hey @joeycarter!

I've realized that when trying to set some axis' attributes, it seems like the new attributes overlap with the old ones or something like this. It's a bit difficult to explain, but it's easy to reproduce. For instance, in the hist.py example, you can change this line to ax.set_xlabel("X [GeV]", ndivisions=505, axiscolor=2) and get the following result:

Any idea why this is happening?

Thanks!