[Plugin: Before After] lt-arrow rt-arrow border size

Hello,
I have custom theme installed and its effecting your plugin arrow borders. I was trying to set lt-arrow rt-arrow border size to 0 but I can’t get this to work.

Perhaps you some one can tell me where I can set this so I don’t get on my arrows borders.

http://dl.dropbox.com/u/1137940/Dropbox/wp-arrow-border.png

http://wordpress.org/extend/plugins/before-after/