How to use the pygments.token.Name.Function function in Pygments

(r'(error_(code|msg)_\w+|Error_AddError|Error_ColumnRestriction|'
             r'Error_DatabaseConnectionUnavailable|Error_DatabaseTimeout|'
             r'Error_DeleteError|Error_FieldRestriction|Error_FileNotFound|'
             r'Error_InvalidDatabase|Error_InvalidPassword|'
             r'Error_InvalidUsername|Error_ModuleNotFound|'
             r'Error_NoError|Error_NoPermission|Error_OutOfMemory|'
             r'Error_ReqColumnMissing|Error_ReqFieldMissing|'
             r'Error_RequiredColumnMissing|Error_RequiredFieldMissing|'
             r'Error_UpdateError)\b', Name.Exception),

            # definitions
            (r'(define)(\s+)([a-z_][\w.]*)(\s*=>\s*)(type|trait|thread)\b',
                bygroups(Keyword.Declaration, Text, Name.Class, Operator, Keyword)),
            (r'(define)(\s+)([a-z_][\w.]*)(\s*->\s*)([a-z_][\w.]*=?|[-+*/%])',
                bygroups(Keyword.Declaration, Text, Name.Class, Operator,
                         Name.Function), 'signature'),
            (r'(define)(\s+)([a-z_][\w.]*)',
                bygroups(Keyword.Declaration, Text, Name.Function), 'signature'),
            (r'(public|protected|private|provide)(\s+)(([a-z_][\w.]*=?|[-+*/%])'
             r'(?=\s*\())', bygroups(Keyword, Text, Name.Function),
                'signature'),
            (r'(public|protected|private|provide)(\s+)([a-z_][\w.]*)',
                bygroups(Keyword, Text, Name.Function)),

            # keywords
            (r'(true|false|none|minimal|full|all|void)\b', Keyword.Constant),
            (r'(local|var|variable|global|data(?=\s))\b', Keyword.Declaration),
            (r'(array|date|decimal|duration|integer|map|pair|string|tag|xml|'
             r'null|boolean|bytes|keyword|list|locale|queue|set|stack|'
             r'staticarray)\b', Keyword.Type),
            (r'([a-z_][\w.]*)(\s+)(in)\b', bygroups(Name, Text, Keyword)),
            (r'(let|into)(\s+)([a-z_][\w.]*)', bygroups(Keyword, Text, Name)),

bygroups(Comment.Preproc, Text, Keyword, Text, Comment.Preproc,
                      Text, Comment.Preproc, Text, Keyword, Text,
                      Comment.Preproc)),
            # filter blocks
            (r'(\{%)(-?\s*)(filter)(\s+)([a-zA-Z_]\w*)',
             bygroups(Comment.Preproc, Text, Keyword, Text, Name.Function),
             'block'),
            (r'(\{%)(-?\s*)([a-zA-Z_]\w*)',
             bygroups(Comment.Preproc, Text, Keyword), 'block'),
            (r'\{', Other)
        ],
        'varnames': [
            (r'(\|)(\s*)([a-zA-Z_]\w*)',
             bygroups(Operator, Text, Name.Function)),
            (r'(is)(\s+)(not)?(\s+)?([a-zA-Z_]\w*)',
             bygroups(Keyword, Text, Keyword, Text, Name.Function)),
            (r'(_|true|false|none|True|False|None)\b', Keyword.Pseudo),
            (r'(in|as|reversed|recursive|not|and|or|is|if|else|import|'
             r'with(?:(?:out)?\s*context)?|scoped|ignore\s+missing)\b',
             Keyword),
            (r'(loop|block|super|forloop)\b', Name.Builtin),
            (r'[a-zA-Z_][\w-]*', Name.Variable),
            (r'\.\w+', Name.Variable),
            (r':?"(\\\\|\\"|[^"])*"', String.Double),
            (r":?'(\\\\|\\'|[^'])*'", String.Single),
            (r'([{}()\[\]+\-*/,:~]|[><=]=?)', Operator),
            (r"[0-9](\.[0-9]*)?(eE[+-][0-9])?[flFLdD]?|"
             r"0[xX][0-9a-fA-F]+[Ll]?", Number),
        ],
        'var': [
            (r'\s+', Text),
            (r'(-?)(\}\})', bygroups(Text, Comment.Preproc), '#pop'),

class Base16Style(Style):

    background_color = base00
    highlight_color = base02
    default_style = base05

    styles = {
        Text: base05,
        Error: '%s bold' % base08,
        Comment: base03,
        Keyword: base0E,
        Keyword.Constant: base09,
        Keyword.Namespace: base0D,
        Name.Builtin: base0D,
        Name.Function: base0D,
        Name.Class: base0D,
        Name.Decorator: base0E,
        Name.Exception: base08,
        Number: base09,
        Operator: base0E,
        Literal: base0B,
        String: base0B
    }

# See https://github.com/jonathanslenders/python-prompt-toolkit/blob/master/prompt_toolkit/styles/defaults.py
# for a description of prompt_toolkit related pseudo-tokens.

overrides = {
    Token.Prompt: base0B,
    Token.PromptNum: '%s bold' % base0B,
    Token.OutPrompt: base08,

"""
    Common objdump lexer tokens to wrap an ASM lexer.
    """
    hex_re = r'[0-9A-Za-z]'
    return {
        'root': [
            # File name & format:
            ('(.*?)(:)( +file format )(.*?)$',
                bygroups(Name.Label, Punctuation, Text, String)),
            # Section header
            ('(Disassembly of section )(.*?)(:)$',
                bygroups(Text, Name.Label, Punctuation)),
            # Function labels
            # (With offset)
            ('('+hex_re+'+)( )(<)(.*?)([-+])(0[xX][A-Za-z0-9]+)(>:)$',
                bygroups(Number.Hex, Text, Punctuation, Name.Function,
                         Punctuation, Number.Hex, Punctuation)),
            # (Without offset)
            ('('+hex_re+'+)( )(<)(.*?)(>:)$',
                bygroups(Number.Hex, Text, Punctuation, Name.Function,
                         Punctuation)),
            # Code line with disassembled instructions
            ('( *)('+hex_re+r'+:)(\t)((?:'+hex_re+hex_re+' )+)( *\t)([a-zA-Z].*?)$',
                bygroups(Text, Name.Label, Text, Number.Hex, Text,
                         using(asm_lexer))),
            # Code line with ascii
            ('( *)('+hex_re+r'+:)(\t)((?:'+hex_re+hex_re+' )+)( *)(.*?)$',
                bygroups(Text, Name.Label, Text, Number.Hex, Text, String)),
            # Continued code line, only raw opcodes without disassembled
            # instruction
            ('( *)('+hex_re+r'+:)(\t)((?:'+hex_re+hex_re+' )+)$',
                bygroups(Text, Name.Label, Text, Number.Hex)),

from pygments.style import Style
from pygments.token import Comment, Name, Keyword, String


class RrtStyle(Style):
    """
    Minimalistic "rrt" theme, based on Zap and Emacs defaults.
    """

    background_color = '#000000'
    highlight_color = '#0000ff'

    styles = {
        Comment:            '#00ff00',
        Name.Function:      '#ffff00',
        Name.Variable:      '#eedd82',
        Name.Constant:      '#7fffd4',
        Keyword:            '#ff0000',
        Comment.Preproc:    '#e5e5e5',
        String:             '#87ceeb',
        Keyword.Type:       '#ee82ee',
    }

class Base16Style(Style):

    background_color = base00
    highlight_color = base02
    default_style = base05

    styles = {
        Text: base05,
        Error: '%s bold' % base08,
        Comment: base03,
        Keyword: base0E,
        Keyword.Constant: base09,
        Keyword.Namespace: base0D,
        Name.Builtin: base0D,
        Name.Function: base0D,
        Name.Class: base0D,
        Name.Decorator: base0E,
        Name.Exception: base08,
        Number: base09,
        Operator: base0E,
        Literal: base0B,
        String: base0B
    }

# See https://github.com/jonathanslenders/python-prompt-toolkit/blob/master/prompt_toolkit/styles/defaults.py
# for a description of prompt_toolkit related pseudo-tokens.

overrides = {
    Token.Prompt: base0B,
    Token.PromptNum: '%s bold' % base0B,
    Token.OutPrompt: base08,

def get_tokens_unprocessed(self, text):
        for index, token, value in \
            CLexer.get_tokens_unprocessed(self, text):
            if token is Name:
                if value in self.variable_qualifiers:
                    token = Keyword.Type
                elif value in self.vector_types:
                    token = Keyword.Type
                elif value in self.variables:
                    token = Name.Builtin
                elif value in self.execution_confs:
                    token = Keyword.Pseudo
                elif value in self.function_qualifiers:
                    token = Keyword.Reserved
                elif value in self.functions:
                    token = Name.Function
            yield index, token, value

variables_string = (
        'praatVersion', 'tab', 'shellDirectory', 'homeDirectory',
        'preferencesDirectory', 'newline', 'temporaryDirectory',
        'defaultDirectory',
    )

    tokens = {
        'root': [
            (r'(\s+)(#.*?$)',  bygroups(Text, Comment.Single)),
            (r'^#.*?$',        Comment.Single),
            (r';[^\n]*',       Comment.Single),
            (r'\s+',           Text),

            (r'\bprocedure\b', Keyword,       'procedure_definition'),
            (r'\bcall\b',      Keyword,       'procedure_call'),
            (r'@',             Name.Function, 'procedure_call'),

            include('function_call'),

            (words(keywords, suffix=r'\b'), Keyword),

            (r'(\bform\b)(\s+)([^\n]+)',
             bygroups(Keyword, Text, String), 'old_form'),

            (r'(print(?:line|tab)?|echo|exit|asserterror|pause|send(?:praat|socket)|'
             r'include|execute|system(?:_nocheck)?)(\s+)',
             bygroups(Keyword, Text), 'string_unquoted'),

            (r'(goto|label)(\s+)(\w+)', bygroups(Keyword, Text, Name.Label)),

            include('variable_name'),
            include('number'),

Keyword.Declaration: colors['cyan'],
        Keyword.Namespace:   colors['orange'],
        Keyword.Type:        colors['yellow'],

        Operator:            colors['base01'],
        Operator.Word:       colors['green'],

        Name.Builtin:        colors['blue'],
        Name.Builtin.Pseudo: colors['blue'],
        Name.Class:          colors['blue'],
        Name.Constant:       colors['blue'],
        Name.Decorator:      colors['blue'],
        Name.Entity:         colors['blue'],
        Name.Exception:      colors['blue'],
        Name.Function:       colors['blue'],
        Name.Function.Magic: colors['blue'],
        Name.Label:          colors['blue'],
        Name.Namespace:      colors['blue'],
        Name.Tag:            colors['blue'],
        Name.Variable:       colors['blue'],
        Name.Variable.Global:colors['blue'],
        Name.Variable.Magic: colors['blue'],

        String:              colors['cyan'],
        String.Doc:          colors['base01'],
        String.Regex:        colors['orange'],

        Number:              colors['cyan'],

        Generic.Deleted:     colors['red'],
        Generic.Emph:        'italic',
        Generic.Error:       colors['red'],

from pygments.style import Style
from pygments.token import Comment, Name, Keyword, String


class RrtStyle(Style):
    """
    Minimalistic "rrt" theme, based on Zap and Emacs defaults.
    """

    background_color = '#000000'
    highlight_color = '#0000ff'

    styles = {
        Comment:            '#00ff00',
        Name.Function:      '#ffff00',
        Name.Variable:      '#eedd82',
        Name.Constant:      '#7fffd4',
        Keyword:            '#ff0000',
        Comment.Preproc:    '#e5e5e5',
        String:             '#87ceeb',
        Keyword.Type:       '#ee82ee',
    }