Applying Workbook Themes and Table Styles

To apply an existing theme:

• first go to the page layout tab 
• Second go to the themes group and click on the themes button. 
• Then you can choose from various themes the one you want for your workbook.
• You can apply a new table style by going to the styles group on the home tab
• click on the format as table button. 
• Then click on the new table style button and you can then customize how you want the new style to look.