Once you are on Google Docs Online, open an existing table or ... Inside the dialog box, select the Cell Background Color or Table Border. You can also select how thick you want the cell borders ...

it's better to access Google Docs through a computer web browser. If you're hoping to change the background color of a cell in a table within Google Docs, here's how to create one first ...

Open the Google Docs document that contains the relevant table. Right-click from within the table. From the context menu, you will want to select Table Properties. Navigate to Color and change it ...