Hi

Thanks for contacting us. You can use this CSS in your custom.css file

.sp-megamenu-parent>li>a:hover{
    color: gray !important;
}

-Regards.

BTW

Remember to you have to keep good color contrast level to keep Web Accessibility, also if we talk about hover over Main Menu items and footer menu. Typical grey could be too light for white background, consider using darker grey or even adding underline.

.sp-megamenu-parent > li > a:hover, #sp-footer ul li a:hover {
  color: #616060 !important;
 text-decoration: underline; }

Hi

Is this solved now? If yes, you can then close this post by accepting the answer.