Customization - Opera Help

Customizing the Opera browser with the Easy Setup panel The easiest way to customize the start page in Opera is to open the Easy Setup panel. The panel is found in the top-right corner of the browser and includes the most popular options. Theme - dark vs. light You can switch between two themes, light…

20 Best Opera GX Extensions You Need to Install Right Now

Opera 12 released with customizable themes

Customization - Opera Help

Opera 87 Offline Installer Download

Browser window - Opera Help

How to change the theme and appearance of the Opera browser on a computer - BrowserHow

Opera 36 Released With Better Support For Windows 10 - MSPoweruser

Internet Download Manager: Opera browser integration does not work

Get started - Opera Help