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Office Settings & Configuration

How to Fix Unexpected Office Theme Color and Font Changes

Bushra ParveenBushra Parveen Sep 28, 2026 871 views

Question details

Users are experiencing unexpected changes to their default theme colors and fonts in Office applications, making the rendered appearance differ from previous configurations.

How to Fix Unexpected Office Theme Color and Font Changes
Product
Microsoft Office
Device & OS
not provided
Scenario
Opening or editing documents in Office applications like Excel, Outlook, or SharePoint after a recent current-channel update.
Observed behavior
The default theme uses brighter colors and a different font. The selected theme does not match the previously rendered appearance, and the old default theme name is no longer available.
Before you start

Ensure your Office applications are fully updated to the latest version to avoid conflicting legacy settings, and identify the specific colors or fonts you wish to restore before customizing the theme manually.

Solution 1Recommended

Select a Previous Built-in Theme or Customize Manually

Restore your previous appearance by selecting an alternative built-in theme or by manually configuring your preferred colors and fonts.

Recent updates to the Office current-channel have replaced the old default theme with a new one featuring brighter colors and different fonts.

Because the former default theme may no longer be available by its old name, you will need to either select a different existing theme that closely matches your old layout or manually define the theme colors and fonts.

1
Navigate to the Theme Settings

Open your Office application (such as Excel). Go to the 'Page Layout' tab on the top ribbon and click on the 'Themes' drop-down menu.

2
Select an Alternative Theme

Browse the available built-in themes. Look for themes like 'Office 2013-2022' or similar legacy options that best match your previous appearance and click to apply.

3
Customize Colors Manually

If no built-in theme matches, click on 'Colors' next to the Themes button and select 'Customize Colors' to manually input your preferred legacy color hex codes.

4
Customize Fonts Manually

Click on the 'Fonts' drop-down next to the Themes button and select 'Customize Fonts'. Choose your previous default fonts (e.g., Calibri) for heading and body text, then save the new theme.

Select a Previous Built-in Theme or Customize Manually
Theme Availability: The exact name of your previous default theme may have been completely removed during the update, making manual customization the most reliable solution.
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Frequently Asked Questions

Why did my Office theme colors suddenly become brighter?

Microsoft occasionally updates the default themes in its current-channel updates to refresh the visual design. A recent update introduced a new default theme with brighter colors and a different default font, replacing the legacy styles.

Can I get the exact old Office default theme back?

While the specific name of the old default theme may have been removed, you can often restore the look by checking for a legacy theme named 'Office 2013-2022' under the Page Layout tab, or by manually setting your fonts back to Calibri and adjusting the theme colors.

Does this theme change affect my printed documents?

Yes. If your document relies on the default theme colors and fonts, printing it will reflect the newly updated styles. You will need to manually change the theme back to your preferred legacy settings to print documents exactly as they appeared before the update.

Are these theme changes affecting SharePoint as well?

Yes, similar theme rendering issues have been reported with customized SharePoint themes, as the broader Microsoft update affected shared theme libraries across the Office ecosystem.