'How to change coc.nvim floating window colors?

I'm using coc.nvim plugin for C++ in my vim editor, here it's showing error but its colors hurt my eyes, I've been searching for solution but still don't know how to customize the colors

cocnvim floating window color



Solution 1:[1]

In their github Discussion, there is a conversation that can solve all problems with Coc FloatingWindow:

here is the link: enter link description here

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Source: Stack Overflow

Solution Source
Solution 1 alumen-