Hello, Saud Raza,
1/ To change the color of active tab on the single product page, please go to Theme Options > Theme custom CSS > edit this code – https://gyazo.com/0ca75609529f18e598ed07fd64729750
2/ Add the next custom CSS code:
.single-product .woocommerce-review-link {
display: none;
}If you have any additional questions or concerns, please do not hesitate to reach out to us. Our support team is always available to assist you.
Kind Regards,
8theme team