Hi there,
Your site has this CSS, which is overwriting the link color:
body a, body a:after, body a:before {
color: #d23641;
}If you can’t adjust it, you can try making the WPSP color more important:
body a.wpsp-social-link.wpsp-twitter, body a.wpsp-social-link.wpsp-twitter:visited {
color: #8dc151;
}Your images seem to be using some sort of SVG placeholder. Maybe one of the plugins you’re using isn’t allowing them to display?