Diff of MultiColor

• The added line is THIS COLOR.
• The deleted line is THIS COLOR.
• Go to MultiColor.

[[macOS/BigSur]]

- macOS 11 Big Surではアクセントカラーと強調表示色を各アプリで指定できる「MultiColor」を採用
--  https://applech2.com/archives/20200624-macos-big-sur-new-custom-accent-colors.html