PLease try this by adding at Appearance -> Customize -> Additionak CSS. This will change entire color.
#awards .award-icons, #button_scroll::after, #button_scroll::before, #contact input.wpcf7-form-control.has-spinner.wpcf7-submit, #events .catname, #expirience .button::before, #expirience .button::after, #interview .button::before, #interview .button::after, #interview .fab:hover, #interview .video-section:after, #interview .video-section:before, #recent-news .button::before, #recent-news .button::after, #recent-news .post-date, #selling-book .button2::before, #selling-book .button2::after, #slider .button1::after, #slider .button1::before, #slider .button2:hover, #slider .owl-carousel .owl-nav button.owl-next, #testimonial .owl-dots button.owl-dot.active, .comment-reply a, .comment-respond input#submit, .ecommerce-bookshop-pro-pagination a span:focus, .ecommerce-bookshop-pro-pagination a span:hover, .ecommerce-bookshop-pro-pagination span.current, .ecommerce-bookshop-pro-pagination span.current:focus, .ecommerce-bookshop-pro-pagination span.current:hover, .footer-area .fab:hover, .latest-post .post-date, .pagination .nav-links a:focus, .pagination .nav-links a:hover, .pagination .nav-links span.current, .post-single .blog_share_icon .fab, .searchform input[type=submit], .top-header, .woocommerce #respond input#submit, .woocommerce #respond input#submit.alt, .woocommerce a.added_to_cart, .woocommerce a.button, .woocommerce a.button.alt, .woocommerce button.button, .woocommerce button.button.alt, .woocommerce input.button, .woocommerce input.button.alt, .woocommerce nav.woocommerce-pagination ul li a:focus, .woocommerce nav.woocommerce-pagination ul li a:hover, .woocommerce nav.woocommerce-pagination ul li span.current, .woocommerce ul.products li.product .onsale, .woocommerce span.onsale, #join-us .join-us-form {
background: #ef77b1 !important;
background-color: #ef77b1 !important;
}
#aboutus .dashicons, #aboutus h5, #books .add-to-cart, #books .admin a, #books h5, #contact .dashicons, #events .far, #events .fas, #events h5, #interview h5, #join-us h6, #main-menu a:focus, #main-menu a:hover, #main-menu li.focus > a, #main-menu li:focus > a, #main-menu li:hover > a, #main-menu ul li a:focus, #main-menu ul li.current-menu-ancestor > a, #main-menu ul li.current-menu-parent > a, #main-menu ul li.current_page_ancestor > a, #main-menu ul li.current_page_item > a, #recent-news .far, #recent-news h5, #selling-book .add-to-cart, #selling-book .admin a, #selling-book h5, #slider h5, #testimonial h5, #testimonial span.dashicons.dashicons-format-quote, .copyright a, .dashicons-before:before, .latest-post .far, .post-meta i, .single-events .fas, .woocommerce div.product .woocommerce-tabs ul.tabs li.active, .woocommerce div.product p.price, .woocommerce div.product span.price, .woocommerce ul.products li.product .price, a:hover, a:focus {
color: #ef77b1 !Important;
}
.
