@mimi2234 Much Thanks! I was so confused because I recently updated Opera (after keeping it open for months) and during that it seems I changed the settings on my Mac. Thanks again for the huge help, the glaring white was getting to me, especially at night.

@ami-go im also having the same problem as @Mimi2234 Mimi2234 and I'm on mac as well, is there a way to configure settings on mac (since its not Ubuntu) to get the normal dark style? Any information on how to replicate similar changes you did but on mac would be helpful, thanks!