On the Page Layout tab in Excel or the Design tab in Word, click Colors, and then click Customize Colors. Click the button next to the theme color you want to change (for example, Accent 1 or …

For each theme color you want to change, select the button next to that color, and then select a color under Theme Colors. To add your own color, select More Colors, and then select a color …

To change the theme, click on the menu for your Microsoft 365 application (Word, Excel, etc.) and select Preferences > General. Under the Personalize section you can configure your theme.

To change the default theme in Excel, you need to create a new, default workbook template or a new, default worksheet template. A workbook template can contain multiple worksheets, …

To change color schemes, switch to a different theme. In Excel, click Page Layout, click the Colors button, and then pick the color scheme you want or create your own theme colors.

Under Theme Colors or Standard Colors, pick the color you want. To use a custom color, select More Colors, and then in the Colors dialog box select the color you want.

The Office theme is the color scheme for your entire Office program, while document themes are more specific (they show up in individual Access or Outlook files).

To make sure you are using a supported Office theme, go to File > Account > Office Theme and confirm that either Black or Use system setting is selected. To turn on Dark Mode, select the …

Apply the latest Office Theme (font and colors) to your Microsoft 365 applications.

To use a pattern with two colors, select another color in the Pattern Color box, and then select a pattern style in the Pattern Style box. To use a pattern with special effects, select Fill Effects, …