-record(theme, {
    keyword :: spruce@style:style(),
    string :: spruce@style:style(),
    number :: spruce@style:style(),
    comment :: spruce@style:style(),
    function :: spruce@style:style(),
    operator :: spruce@style:style(),
    punctuation :: spruce@style:style(),
    type_ :: spruce@style:style(),
    module_ :: spruce@style:style(),
    variable :: spruce@style:style(),
    constant :: spruce@style:style(),
    builtin :: spruce@style:style(),
    tag :: spruce@style:style(),
    attribute :: spruce@style:style(),
    selector :: spruce@style:style(),
    property :: spruce@style:style(),
    regex :: spruce@style:style()
}).