Many of the plots generated on the IEM website are done with the fine python plotting library Matplotlib. This library recently released version 2.0.0 and I have bitten the bullet to update to using it. If you see any plots that look strange, please let me know! In general, the biggest part of the upgrade is to change the default look of the plots. For example:
I think the new plots look really great! Again, please let me know of issues you are finding/seeing.