Click the Page Layout tab.
Then click the Theme Colors button
Then click a color theme.
To create theme colors, then click Create New Theme Colors.
Click the Theme Colors button arrows (Text/Background, Accent, or Hyperlink, etc.) for the colors you want to change.
Click a new color, or click More Colors to select a color from the Standard or Custom tab, and then click OK.
Click the Reset button to return all color changes to their original colors.
Type a new name for the color theme.
Click Save.