Reading PDFs in dark mode on Android?

[ddrueding]

Hi, my daughter is reading quite a few ebooks when we travel. Many of them are in PDF format, and she'd like to invert the colors (from black text on white background to white text on black background). I suspect a few people here have a solution.

Thanks!

 

[Mercutio]

Google Play Books will invert easily if the documents are smaller than 100MB total. 100MB is a bit light for my needs because I often have giant role playing manuals open, but that's answer A.

I also a Komga back-end with Moon+ Reader as a client as a self-hosted solution since, as I said, sometimes my files are bigger. Moon Reader does a bunch of stuff I don't mess with, but it's great for PDFs and Epubs.

You don't need to involve Komga, but I like having everything ever published for Delta Green and every issue of The Unbeatable Squirrel Girl at my fingertips.