User blog comment:Gcheung28/New sharing options on Wikia/@comment-5285329-20150427170541/@comment-5275700-20150427173638

As noted in the blog, the color is set to match the link color from Theme Designer. We may be testing various sizes, as well as placements, so no customizations at this time, please. Since this is becoming a standard user interface element, it's likely that customizations won't be allowed. However, please let us know your feedback on the size of the buttons!