enumerize.rb

class Color
  def self.const_missing(name)
    const_set(name, new(name.to_s.downcase))
  end
  
  def initialize(color_name)
    @color_name = color_name
  end
  def to_s
    @color_name
  end
end

puts Color::Red
puts Color::Blue

puts Color::Red != Color::Blue
puts Color::Red == Color::Red