There was no custom link colour on the other site.
To target the link colour, you’ll need to add new styles for each element you want to target.
Here is an example of how to change the colour scheme in Sela from bright pink to turquoise. You can of course change the 494949 colour to your own colour code. Some of these elements may already be covered by your existing custom CSS, but this will make sure no elements are missed:
.nav-menu > li > a:after {
color: rgba(0, 0, 0, 0.3);
}
.main-navigation a, .social-links ul a:before { color: #494949;}
.menu-toggle, .menu-toggle:hover, .menu-toggle:focus { color: #494949;}
.main-navigation.toggled ul ul, .main-navigation.toggled ul ul a { color: #494949;}
.site-info a { color: #FFFFFF;}
.main-navigation a:hover, .main-navigation ul > :hover > a, .main-navigation ul > .focus > a { color: #494949;}
.main-navigation li.current_page_item > a, .main-navigation li.current-menu-item > a { color: #494949;}
.main-navigation li.current_page_item > a .sub-menu li a, .main-navigation li.current-menu-item > a .sub-menu li a, .main-navigation ul ul li.current_page_item > a, .main-navigation ul ul li.current-menu-item > a { color: #4F4F4F;}
body { background-color: #f0f0f0;}
.main-navigation, button { background-color: #74ccd1;}
a, .entry-title a:hover, .comment-meta a, .jetpack-testimonial .entry-title { color: #2B797C;}
.widget_flickr #flickr_badge_uber_wrapper td a:last-child, .widget-area .milestone-countdown .difference { color: #2B797C;}
.main-navigation ul ul a:hover, .main-navigation ul ul > li.focus > a { color: #2B797C;}
input[type="button"], input[type="reset"], input[type="submit"], #infinite-handle span { background-color: #2B797C;}
input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
input[type="search"]:focus,
input[type="url"]:focus,
textarea:focus { border-color: #2B797C;}
.social-links ul a:before, .footer-widget-area button { background-color: #74CCD1;}
.site-info a:hover { color: #74CCD1;}
.footer-widget-area a:hover { color: #297679;}