def parse(node)
      node.attributes.each do |key, value|
        case key
        when 'val'
          @value = Color.new.parse_hex_string(value.value.to_s)
        when 'themeColor'
          @theme_color = value.value.to_sym
        when 'themeShade'
          @theme_shade = Integer("0x#{value.value}")
        when 'theme'
          @theme = value.value.to_i
        when 'tint'
          @tint = value.value.to_f
        when 'indexed'
          @indexed = value.value.to_i
        when 'rgb'
          @rgb = Color.new.parse_hex_string(value.value)
        end
      end
      self
    end
def parse(node)
      node.attributes.each do |key, value|
        case key
        when 'val'
          @value = Color.new.parse_hex_string(value.value.to_s)
        when 'themeColor'
          @theme_color = value.value.to_sym
        when 'themeShade'
          @theme_shade = Integer("0x#{value.value}")
        when 'theme'
          @theme = value.value.to_i
        when 'tint'
          @tint = value.value.to_f
        when 'indexed'
          @indexed = value.value.to_i
        when 'rgb'
          @rgb = Color.new.parse_hex_string(value.value)
        end
      end
      self
    end
Parse Hyperlink object
 @param node [Nokogiri::XML:Element] node to parse
 @return [Hyperlink] result of parsing