Changing a specific block of code
Right click page and hit inspect.
hit the tiny tool selector in the top left of the generated box.
select the table you want to modify.
adjust the background and color you want to use.
copy the white highlighted block of text.
past into the advanced them editor at the bottom and add an open curly bracket.
type background and hit space.. color code goes here and then hit enter.
repeat for color.
a closed bracket should appear.
save and close.