def enable_irb
      IRB::Inspector.class_eval {
        unless method_defined?(:inspect_value_with_colour)
          alias_method :inspect_value_without_colour, :inspect_value

          def inspect_value_with_colour(value)
            Colours.colourize(inspect_value_without_colour(value))
          end
        end

        alias_method :inspect_value, :inspect_value_with_colour
      }
    end
def enable_irb
      IRB::Inspector.class_eval {
        unless method_defined?(:inspect_value_with_colour)
          alias_method :inspect_value_without_colour, :inspect_value

          def inspect_value_with_colour(value)
            Colours.colourize(inspect_value_without_colour(value))
          end
        end

        alias_method :inspect_value, :inspect_value_with_colour
      }
    end
Enable colourized IRb results.