Hi,
Thank you for reaching out to us. I am happy to help with your queries.
Try adding this CSS code to Appearance > Customize > Additional CSS from dashboard.
.main-navigation a:hover, .main-navigation a:focus, .main-navigation a:active, .footer-navigation a:hover, .footer-navigation a:focus, .footer-navigation a:active, .header-top .social-navigation a:hover, .entry-meta a:hover, .main-navigation ul li a:hover, .secondary-navigation .site-search_submit .fas:hover, .wc-header-cart__wrap .wc-header-cart__link:hover, .header-top .social-navigation a:hover, .entry-meta .author:hover, .entry-meta .author:focus, .byline .author:hover, .byline .author:focus, .entry-meta .author a.url:hover, .entry-meta .author a.url:focus, .entry-meta .posted-on a:hover, .entry-meta .posted-on a:focus, .site-info a:hover, .site-info a:focus, .site-info a:visited:hover {
color: #fff000;
}
/** Button **/
button,
input[type="button"],
input[type="reset"],
input[type="submit"],
.ca-button,
.ca-button:visited,
.comment-reply-link,
.comment-reply-link:visited,
.comment-form input[type="submit"],
.ca-contact-form button,
.ca-contact-form input[type="button"],
.ca-contact-form input[type="reset"],
.ca-contact-form input[type="submit"],
.wpcf7-form-control.wpcf7-submit,
.wpcf7-form-control.wpcf7-submit:visited,
.woocommerce #respond input#submit.alt,
.woocommerce a.button.alt,
.woocommerce a.button.alt:visited,
.woocommerce button.button.alt,
.woocommerce input.button.alt {
background: #330000;
color: #fff;
border: 1px solid #330000;
}
button:hover,
input[type="button"]:hover,
input[type="reset"]:hover,
input[type="submit"]:hover,
.ca-button:hover,
.comment-reply-link:hover,
.ca-button--big:hover,
.comment-form input[type="submit"]:hover,
.ca-contact-form button:hover,
.ca-contact-form input[type="button"]:hover,
.ca-contact-form input[type="reset"]:hover,
.ca-contact-form input[type="submit"]:hover,
.wpcf7-form-control.wpcf7-submit:hover,
.woocommerce #respond input#submit.alt:hover,
.woocommerce a.button.alt:hover,
.woocommerce button.button.alt:hover,
.woocommerce input.button.alt:hover {
border: 1px solid #fff000;
background: #fff;
color: #fff000;
}
Regards,
Kharis