color validation

    validate :validate_colors

    def validate_colors
      pattern = /^[\da-f]{6}$/
      primary_status = primary_color =~ pattern
      secondary_status = secondary_color =~ pattern
      errors.add(:primary_color, @@default_error_messages[:format]) unless primary_status
      errors.add(:secondary_color, @@default_error_messages[:format]) unless secondary_status
      if primary_status && secondary_status
        if Color.similar?(primary_color, secondary_color)
          errors.add(:secondary_color, I18n.t('activerecord.errors.models.club.secondary_color.primary_similar'))
        end
      end
    end