hover over the icon in the attachment. or use tab button to move focus to icon in attachment style of text and circle are changed and now visible. however style of "border" which is <use> has not changed. CSS rules specify it should have. compare with Opera or mozilla where style changes. maybe related to http://bugs.webkit.org/show_bug.cgi?id=7555 please move to CSS if that is the correct component.
Created attachment 13590 [details] demonstrates styles changes though broken for <use>
less than a month and I'm already filing dupes. ~:" *** This bug has been marked as a duplicate of 12838 ***
Fixed - landed in r20262.