If you want to give coordinated colors and shading to a table, use one of the new table styles. These each have a unique format and use of color, for a professional result. It's more efficient to use a table style than to try to add shading and borders row by row or cell by cell.
The picture shows two examples of table styles. Each of these draws upon one set of colors, available in a theme called Oriel.
You apply a table style by selecting the table in the document and working with Table Tools on the Ribbon. You'll work with styles in the practice session.