I was trying to use the official Monokai.sublime-color-scheme with syntect but it seems this file-format is not supported or maybe it's just me doing something fishy.

I've tried to load it both as json or as xml (ie: used this converter https://www.freeformatter.com/json-to-xml-converter.html) but when feeding it with ThemeSet::get_theme it will crash.

On the other hand, if using a proper thTheme such as monokai.tmTheme there won't be any problem.