Support for v5.9.0
As the theming system is changed there was a need for the update.
A lot easier to create a theme and to see modify the needed values when compared to old theme stuff.
I updated the theme version to v2.0.0 as this was such a major update and most likely everything is not exactly the same as it was before. I tried my best to match my gut feeling for the colors. I can make minor/patches if I find some missing colors etc.
Should solve the issue #2 .