Pages

Use table styles in Pages on Mac
The easiest way to change the look of a table is to apply a different table style to it, which you can do at any time.
If you customize the look of a table and want to apply the same formatting to other tables, you can create a new table style. The new style is saved along with the styles that come with the template.
Pages determines how to create the table style based on the most frequently used style for some attributes, such as cell fill and border style. For example, if your table uses many different fonts, the new table style adopts the font that appears most often in the table.