Hi Brian

Thanks for posting in the Lucidchart Community! I'm sorry for the trouble but I am happy to help! Can you please clarify what kind of table you are using and the steps you followed before reaching this page? This will help me better identify what is going on with your document. Thanks!

I navigated to Shapes --> Table/Data Grid 

When I then click on the table I see a prompt for "Edit Mark-up" which then opens the screen I sent previously. 

Hi Brian

Thanks for the clarification. The markup allows you to choose the following options for each category:

Header:

• default


• none


• any #[hex color] you choose

Alt-row:

• default


• none


• any #[hex color] you choose

Grid:

• default


• none


• row


• column


• full

To find more HEX colors I recommend using this color picker website. Please let me know if you have additional questions!