make a copy of dialog.tpl give it a new look and call it
now when you want to call it adjust the code from
Code:
{capture name=dialog}
{include file="customer/main/products.tpl"}
{/capture}
{include file="dialog.tpl" content=$smarty.capture.dialog title="Products" extra="width=100%"}
to
Code:
{capture name=dialog}
{include file="customer/main/products.tpl"}
{/capture}
{include file="dialog_new.tpl" content=$smarty.capture.dialog title="Products" extra="width=100%"}