Doesn't seem to be working as expected with Firefox Android. I could enable to Reader Mode but I couldn't find any way to modify font, background color, etc. The add-on didn't have any Options menu in the Add-ons settings either. Also there was a bug with width handling. About 20% of the text went out of the container.

I haven't seen any customizations available (font, select and read, etc.).
When I go to Reader view I usually get a title that has nothing to do with the page I want to view (title is right, what follows isn't right).
Right clicking orange R doesn't result in anything other than a dropdown starting with "Pin to Overflow Menu" and "Remove from Toolbar".
Is there a tutorial somewhere?

It claims "Also by right clicking on Reader status-bar icon you can get other Styling Options," but right-clicking on Reader icon does not provide any styling options!

Complete fail. I was looking for a FF version of the excellent Chrome extension 'Just Read', but didn't find one. This was one of only two readers available for FF.

Cons:

• no keyboard shortcut
• no images
• nested pages––had to click on the inner page to be able to scroll
• even clicking on the icon didn't restore view––had to reload page
• basic simple text

Chrome 'Just Read':

• keyboard shortcut activates AND deactivates extension
• images included
• single page that scrolls without having to click on it
• easy-to-read formatted text