Changing the leading color (header bar to white) in Plain Black template

In order to change the leading color of the menu bar in the Plain Black template to white, go to Settings> Account settings> Print settings (menu on the left), and then at the bottom of the page, in the field Customize print with CSS apply the following CSS code:

} @media all {
#pos_table th {background-color:white;color:black; border-top:2px solid black;border-bottom:2px solid;black;}


Invoice in Plain Black template before changes:



Invoice appearance after applying css code, header bar has been changed to white: