You can choose from among dozens of preformatted visual themes.When you want to format a workbook element, Excel displays colors that are available
within the active theme. For example, selecting a worksheet cell and then clicking the Font
Color arrow displays a palette of colors. The theme colors appear at the top of the color
palette—the standard colors and the More Colors link, which displays the Colors dialog
box, appear at the bottom of the palette.If you format workbook elements by using colors from the Theme Colors area, applying a
different theme changes that object’s colors.Applying Workbook Themes and Excel Table Styles 321