Opera for Android update adds revamped night mode, lots of improvements2
With version 55, Opera developers reimplemented the option to darken the UI from the ground up to give users a full-fledged and configurable night mode. For example, there's a new additional dimming option that lets you go super-dark, minimizing light. Although the setting was available in previous versions of Opera, it's been reworked to match with the new color temperature setting. Also, this version eliminates the need for special device overlay permissions.
Speaking of color temperature, you now have a new setting that allows you to adjust the color temperature to suppress the blue light components, which will limit the effects of late-night browsing.
The mobile browser gained support for more countries and languages. Opera v55 uses a new two-column layout in landscape mode on tablets, so it can make better use of the available space.
Last but not least, one of the most-requested features has finally been added to the browser – the ability to switch tabs without going into the tab gallery. After the update, you'll be able to quickly flip between tabs by swiping the bottom bar.