I was done that before this thread, no results, even with 
 . The result are this 
 color border. My bet was on a override on site main template css. Followed that trail and remove it, with Firebug that pointed me that.Thank you for your time and quick response.
 I know this is a another thread but i'l give the shot: May I sugest putting in distribution package the psd files for buttons in case of user translations ? Or a text over empty button that could take valors from language files (modded when install) to reflect template language ?
  Again, awesome support, thanks.