Check minial scope coverage for color schemes

[FichteFoll]

https://www.sublimetext.com/docs/3/scope_naming.html#color_schemes

Currently:

• entity.name
• entity.other.inherited-class
• entity.name.section
• entity.name.tag
• entity.other.attribute-name
• variable
• variable.language
• variable.parameter
• variable.function
• constant
• constant.numeric
• constant.language
• constant.character.escape
• storage.type
• storage.modifier
• support
• keyword
• keyword.control
• keyword.operator
• string
• comment
• invalid