OnePlus
Dark or Light Theme for the Browser App auf OnePlus
The Chrome browser on OnePlus phones follows its own theme setting, separate from the system-wide dark mode. If you switched your phone to a dark interface but Chrome still opens with a white background, the app theme is likely set to System default and not picking up the change, or it was manually set to Light.
To fix this, open the theme option directly inside the browser app:
Open the Chrome app ➔ Open the menu ➔ Open the Settings ➔ Tap on Theme ➔ Choose System default, Light or Dark
Choosing System default links the browser to your phone-wide display setting, so it switches automatically whenever you toggle dark mode. Picking Dark or Light directly overrides that behavior and keeps the browser fixed on your choice, regardless of what the rest of the phone does.
A fixed theme is useful if you want a permanently dark reading surface even during the day, or if you need a light layout for screenshots and video calls where a dark browser would look inconsistent. Keep in mind that some websites apply their own light or dark styling on top of the browser theme, so individual pages may still look different from the rest of the interface.