Create a duplicate of an existing cell style in Excel 2007

If you need to create a duplicate of an existing or custom cell style, perform the following steps:

1. On the Home tab, in the Styles group, click Cell Styles.
2. Right click on any style and click Duplicate...
3. In the Style dialog box, type a name in the Style name: box or accept the default name.
4. Click OK to close the Style dialog box.

When you click Cell Styles on the Home tab, the duplicate cell style will appear under Custom.