Hello,
Thank you for posting in Q&A forum.
Yes, it can. On your site, click the gear icon (⚙️) in the upper right corner of the page and select Change Appearance > Theme.
You'll see a list of themes to choose from, including a default theme or a custom theme, depending on how your site is configured. You can choose a theme from them.
Once you select the desired theme, the color settings are immediately applied to the page, allowing you to preview how the selected theme will look.
Once you find the theme you want to use, select Save to save your selection or Cancel to revert to the current theme.
Reference links: Change the look of your SharePoint site - Microsoft Support
I hope the information above is helpful.
Best Regards,
Yanhong Liu
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