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There are a few places where you need to change the color, for example, Theme Options > Styling > Main Color, Theme Options > Header builder > Main menu > Text Color and Line Color, Theme Options > Footer > Footer styling > Footer Links, Theme Options > Theme custom CSS > change the color in code.
Do you use WPBakery or Elementor? For example, edit pages using WPBakery – https://gyazo.com/5073560520c76ca70f38c8fae6f78751 , edit custom CSS for page – https://gyazo.com/25b1c2ace51f0e6fec3165a26e521fe7
