On the customizer, under the Colours tab, there is “Sidebar Link Colour” and “Sidebar Link Hover Colour”. But, as my goof up shows, go into the theme’s style.css and look for line 597 for:
h1 a:link,
h1 a:visited,
#right-column a:link,
#right-column a:visited {
color: #747474;
}
h1 a:hover,
#right-column a:hover {
color:#b88d28;
}
Remove the colour lines and see if that helps. But one more thing…. the same colour is shared with the post titles that are linked, so you may want to make a change where only the #right-column links are affected.