Introduction
In this article, we will learn how to change background themes in Gmail by using multiple options.
Change the Background Theme in Gmail
Gmail is one of the most popular web-based email clients, with numerous customization options such as changing the background themes, density mode, inbox type, setting a profile picture, changing the reading pane, and many more.
You can pick from the following available background themes for your Gmail account.
Default Theme: When you sign up for the first time for a Gmail account, you will get the default theme that is grey, white, and black in background color.
Pick your theme: You can pick any theme from the available list of themes.
Dark mode theme: It will change the Gmail account interface into a dark mode theme.
Upload your own photo: You can upload your own photo and use as a background theme.
Let’s see all the background themes one by one.
Default Theme
Login to your Gmail account and you will see a default theme in simple grey and white as below.

Click Settings on the top right side of your Gmail account. Under Theme, the default theme is selected by default.

Pick Your Theme
You can pick any of your favorite themes from the available list of themes in Gmail.
Click Settings > View all.

Pick your theme from the available themes and click “Save.”

New theme applied.

Dark Mode Theme
The Dark mode theme is one of the most popular themes amongst IT professionals and some users. It helps the user to focus on the screen, and in low light conditions, dark mode is the preferred option.
Let’s see how to switch to the dark mode theme.
On your Gmail account, click Settings > View all and select Dark Mode Theme and click Save.

Dark mode theme applied.

Upload your own photo
Gmail allows you to upload your own photo and use it as a background theme. Make sure you have uploaded a photo to photos.google.com to use as a background theme.
On your Gmail account, click Settings > View all > My photos

Click on profile photos that you have uploaded using Google photos.

Choose the background image and click Select.

Click Save to make the changes take effect.

Your uploaded photo theme is applied.

Follow our post below on how to set a profile picture in Gmail.
https://easytechhub.com/how-to-change-gmail-account-profile-picture/
Conclusion
Google provides loads of customization options for Gmail accounts; changing background themes is one of them. In this blog post, we learned how to switch between various background themes in Gmail.