I am adding icons from widgets option and my footer color is black the social media icons are of grey color its hard to be visible how to change color of them.
You can create HTML Blocks and use the social icons elements: https://postimg.cc/hQ9Rf7Z7 and customize it as per your need in the page builder. Then save the changes and publish that html block.
Now use the shortcode of a recently created html block in your footer column from Appearance >> Widgets. https://ibb.co/4Msjkgd