Where to Find the Theme Button in Excel

The theme controls in Excel live in the File menu, not in the ribbon where most formatting tools sit. Open Excel and click File in the top left corner. From there, select Options at the bottom of the left sidebar. In the Options window, click General in the left panel, and you will see the Office Theme dropdown near the top of the screen.

The exact location is the same whether you use Excel on Windows or Mac, though the menu layout looks slightly different on each. On Windows, the dropdown appears under "Personalize your copy of Microsoft Office." On Mac, it is in the same General section but labeled straightforward as "Theme."

Key Takeaways

  • Excel themes are found in File > Options > General, not in the ribbon toolbar.
  • Excel offers five built-in themes: Colorful, Dark Gray, Black, White, and Classic Blue.
  • Changing the theme affects the entire Office suite (Word, PowerPoint, Outlook) on that computer, not just Excel.
  • Theme changes take effect when ready and do not require you to restart Excel or reopen your workbook.
  • Changing the theme does not alter the colors, fonts, or formatting inside your spreadsheet — only the background and button appearance.

The Five Built-In Themes and What They Look Like

Colorful is the default theme in most Excel installations. It uses a white background with blue accents on buttons and menus. This theme works well if you spend long hours in Excel because the light background reduces eye strain compared to darker options.

Dark Gray darkens the ribbon and sidebar to a medium gray while keeping the spreadsheet area lighter. The contrast makes the ribbon easier to scan, and many users find it reduces glare in dim lighting. Black takes this further, using near-black for all menus and ribbons. White is the opposite — it removes all color accents and uses a plain white interface throughout.

Classic Blue was added in recent Excel versions and uses a softer blue tone than Colorful. It sits between Colorful and Dark Gray in terms of contrast. None of these themes change the color of your actual spreadsheet data — they only change the appearance of Excel's menus, buttons, and background.

How to Switch Themes Step by Step

Click File in the top left corner of Excel. The backstage view will open, showing a menu on the left side. Scroll down and click Options at the bottom of that menu. The Excel Options dialog box will appear.

In the left panel of the Options window, click General if it is not already selected. Look for the Office Theme dropdown menu — it will show your current theme name. Click the dropdown arrow to see all available themes listed. Click the theme you want to use. The change takes effect when ready, and you can close the Options window by clicking OK.

If you want to see how a theme looks before committing to it, click the dropdown and hover over each option. The preview updates as you hover, so you can see the change without actually selecting it. This is useful if you are deciding between Dark Gray and Black.

What Changes and What Stays the Same

The theme controls only the appearance of Excel's interface — the ribbon, menus, sidebar, and button colors. Your spreadsheet data itself does not change. If your cells contain blue text or a yellow background, those colors remain exactly as they were. Formulas, numbers, and cell formatting are completely unaffected.

The theme also affects all other Microsoft Office programs on your computer at the same time. If you switch Excel to Dark Gray, Word, PowerPoint, and Outlook will also switch to Dark Gray. There is no way to set different themes for different Office programs — the choice applies to the entire suite.

Undoing a Theme Change

If you change your theme and decide you do not like it, the process to switch back is identical. Go to File > Options > General, click the Office Theme dropdown, and select your previous theme. There is no undo button for theme changes, but switching back takes only a few seconds.

If you cannot remember which theme you were using, Colorful is the default in most Excel installations. If you want to return to the original Microsoft look, Classic Blue is the closest match to older Excel versions.

Common Mistakes to Avoid

The most common mistake is looking for theme controls in the ribbon. Many users check the Design tab or Page Layout tab first, but those tabs control the design of your spreadsheet itself, not the Excel interface. Theme controls are always in File > Options > General.

Another mistake is assuming the theme will change only Excel. If you switch to Dark Gray because you want a darker interface, remember that Word, PowerPoint, and Outlook will also switch. If you need a dark theme only for Excel, you cannot do that — the theme applies to all Office programs.

Some users also expect the theme to change the color of their spreadsheet data. It does not. If you want to change cell colors, font colors, or background colors in your actual data, use the formatting tools in the Home tab of the ribbon instead.

Frequently Asked Questions

Does changing the theme affect my spreadsheet data or formulas?

No. The theme only changes the appearance of Excel's menus, buttons, and ribbons. Your spreadsheet data, formatting, colors, and formulas remain exactly as they were. You can switch themes without any risk to your work.

Can I set different themes for Excel and Word?

No. The Office Theme setting applies to all Microsoft Office programs at once. If you change the theme in Excel, Word, PowerPoint, and Outlook will all change to match.

Will my theme choice be saved if I close Excel?

Yes. Once you change the theme, it stays changed until you manually switch to a different one. The setting is saved to your Microsoft account, so the same theme will appear when you open Excel on another computer if you are signed in with the same account.

What if the Office Theme dropdown is grayed out or missing?

This usually means you are using a work or school version of Excel with restricted settings. Contact your IT department or administrator — they may have locked theme changes for security or consistency reasons. Some corporate installations do not allow users to change themes.

Is there a way to create a custom theme?

Excel does not allow you to create entirely custom themes. You can only choose from the five built-in options: Colorful, Dark Gray, Black, White, and Classic Blue. If you want more control over colors, you can change individual cell colors and formatting using the Home tab instead.