Can't make it to work.

[narocath]

I followed the instructions but sublime console returns an error:
Rainbowth: color scheme needs updating Traceback (most recent call last): File "/opt/sublime_text/sublime_plugin.py", line 627, in on_activated_async callback.on_activated_async(v) File "/home/nar/.config/sublime-text-3/Packages/Rainbowth/rainbowth.py", line 188, in on_activated_async colors = self.update_color_scheme(view) File "/home/nar/.config/sublime-text-3/Packages/Rainbowth/rainbowth.py", line 157, in update_color_scheme background = self.get_setting(scheme_xml, 'background') File "/home/nar/.config/sublime-text-3/Packages/Rainbowth/rainbowth.py", line 105, in get_setting scheme_xml, flags=re.DOTALL).group(1) AttributeError: 'NoneType' object has no attribute 'group'
I use sublime 3, any ideas?