Hello, @Lasitha851,
3. I have debugged your site deeply and found that you are using multiple third-party plugins, like CSS Origin, Yellow Pencil, etc, and also using Custom Code as well, also you have the server cache CDN and cache plugins as well, so my conclusion is, that hover color is coming from any third party plugin.
Could you please once check by deactivating the third-party plugins one by one and check which one is creating that issue on your site?
Regards 8Themes Team.