@someonehelp That's because of Opera's force dark mode option. Right click on a blank space of the page and click "Disable force dark mode".

Was having the same issue. Here's what I did based on this older thread:

1. Create a shortcut to Opera One.
2. Go to its properties and add --show-component-extension-options in target without deleting the current one. In my case it displays like this:

"C:\Users\USER\AppData\Local\Programs\Opera developer\launcher.exe" --show-component-extension-options

3. Though the linked thread talks about the Rich Hints Agent extension, it doesn't seems to be the issue here. Not mine anyway. What I did is go to the extensions page and update the Aria one. It should be the second one and display an update button on it.

Now restart Opera and it should be fixed.

Was having the same issue. Here's what I did based on this older thread:

1. Create a shortcut to Opera One.
2. Go to its properties and add --show-component-extension-options in target without deleting the current one. In my case it displays like this:

"C:\Users\USER\AppData\Local\Programs\Opera developer\launcher.exe" --show-component-extension-options

3. Though the linked thread talks about the Rich Hints Agent extension, it doesn't seems to be the issue here. Not mine anyway. What I did is go to the extensions page and update the Aria one. It should be the second one and display an update button on it.

Now restart Opera and it should be fixed.

@someonehelp That's because of Opera's force dark mode option. Right click on a blank space of the page and click "Disable force dark mode".