Thanks for the quick response. I’m going to wait until the new version is officially available for upgrade before tinkering with the CSS editor (I’m a newbie). Meanwhile, I did some research and found a terrific article on table coding for WordPress:
https://wpbtips.wordpress.com/2013/04/09/table-coding-for-wordpress-com-users/
I want the background color for my tables to match the theme’s color for pages and posts. Thanks to that article, I can simply add a background:transparent code to my td tags. It works like a charm, and my tables look great!