Hello,

Please add this code to the Theme Settings > Custom CSS > Global:

body.single-product .product-share .wd-social-icons .wd-icon {
    color: white;
}
body.single-product .product-share .icons-size-small .wd-social-icon{
    width: 30px !important;
    height: 30px !important;	  
    padding-top:7px;
}
.single-product a.wd-social-icon.social-facebook {
    background-color: blue;
}
.single-product a.wd-social-icon.social-twitter {
    background-color: #3CF;
}
.single-product a.wd-social-icon.social-pinterest {
    background-color:#CB2027;
}
.single-product a.wd-social-icon.social-linkedin {
    background-color: #0274B3;
}
.single-product a.wd-social-icon.social-email {
    background-color: #0274B3;
}

Best Regards