remove grey lines from virtuemart 3

[athanaso]

i have put 5 deferent template and all of them have grey borders around tables of products and grey break lines in categories in color (DDDDDD) .How can i remove them ?
http://prntscr.com/8prbd6

[jenkinhill]

See http://forum.virtuemart.net/index.php?topic=116620.0  and  http://forum.virtuemart.net/index.php?topic=108212.0