Share This text-background problem

See thread at http://ww.wp.xz.cn/support/topic/148423?replies=10 which is incorrectly marked “[resolved]”.

The spacing of icon and text issue was resolved.

However, the issue of the text and background color is NOT resolved. In the Copyblogger theme, hovering over the “Share This” text causes the text to disappear (presumably because it turns to white on a white background).

What can I edit to fix this? See problem at http://blog.psychlinks.ca