É por opinião pessoal O MELHOR, ele coloca TODO TIPO DE SITE em modo escuro e ainda tem uns recursos bons de personalização

Amazing. Just works. Dark mode for night and sepia background for the day has helped reduce eye fatigue big time. Thank you.

Perfectly fits to most sites, amazing customization modes and toggles, doesn't hinder performance...what else could you want? HIGHLY recommend for dark theme nuts like me.

Amazingly competent for all sites. I would still recommend Stylish styles because they're customized for their respective sites, but styles often get outdated, while Dark Reader does a great job of darkening any site without weird artifacts.

Please do it dark reader for Opera Browser. You are amazing