Link color setting has been added as an experimental feature in Gutenberg8.3.
The theme has this feature enabled.
Emulsion Theme
block editor ( gutenberg ) 対応した新しいコンセプトのテーマ
block editor ( gutenberg ) 対応した新しいコンセプトのテーマ
block editor ( gutenberg ) 対応した新しいコンセプトのテーマ
Link color setting has been added as an experimental feature in Gutenberg8.3.
The theme has this feature enabled.