Backup diff of Sepia vs current(No. 3)

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Color

• セピア - コトバンク
  • https://kotobank.jp/word/%E3%82%BB%E3%83%94%E3%82%A2-87575

• セピア色の意味や語源とは？フォトショップで画像をセピア色にする方法も
  • https://belcy.jp/53095

• Sepia Tone, StringLogicalComparer, and More
  • https://docs.microsoft.com/en-us/archive/msdn-magazine/2005/january/net-matters-sepia-tone-stringlogicalcomparer-and-more

• セピア調フィルタのうんちく
  • https://qiita.com/yoya/items/9c237caf86ea5ade2617