Hi

I recommend installing the Pocket app from Google Play. It offers (through a free online account) the ability to save and read articles without adverts in a white text on background mode.

I hope this helps, but if not, please come back here and we can look into a different solution for you.

Tnx for your reply. I am aware of Pocket, but I want to use it for any website as I can in the "regular" Firefox with the "Dark Background and Light Text option" and there is a reader mode aswell without ads. But with these settings Firefox is very slow.

I think the combination of these FFox features with Focus would be really great.

Kind regards W. Kami