You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: github.rb
    path of file: ./repos/rouge/lib/rouge/themes
    
    the code of the file until where you have to start completion: # -*- coding: utf-8 -*- #
# frozen_string_literal: true

module Rouge
  module Themes
    class Github < CSSTheme
      name 'github'

      # Primer primitives
      # https://github.com/primer/primitives/tree/main/src/tokens
      P_RED_0        = {:light => '#ffebe9', :dark => '#ffdcd7'}
      P_RED_3        = {
    
      def self.make_light!
        palette :comment     => P_GRAY_5[@mode]
        palette :constant    => P_BLUE_6[@mode]
        palette :entity      => P_PURPLE_5[@mode]
        palette :heading     => P_BLUE_6[@mode]
        palette :keyword     => P_RED_5[@mode]
        palette :string      => P_BLUE_8[@mode]
        palette :tag         => P_GREEN_6[@mode]
        palette :variable    => P_ORANGE_6[@mode]

        palette :fgDefault   => P_GRAY_9[@mode]
        palette :bgDefault   => P_GRAY_0[@mode]

        palette :fgInserted  => P_GREEN_6[@mode]
        palette :bgInserted  => P_GREEN_0[@mode]

        palette :fgDeleted   => P_RED_7[@mode]
        palette :bgDeleted   => P_RED_0[@mode]

        palette :fgError     => P_GRAY_0[@mode]
        palette :bgError     => P_RED_7[@mode]
      end