App seems to work nice and smooth, so good job on that, animations work nicely!
I have this one issue though;
When i open an article, the app pulls the color from the picture and applies to the card background, titles and the accent of the article. I understand why it's pulling a darker shade of the color found in the picture, as it works well with the dark background, but I often find the accent color to be very dim against the dark BG, it's missing contrast and sometimes it's hard to read when there's ambient light.
I know it's a nit-picky, but still, I think it would look better if the color it's using for the accent would be a brighter version of the card BG color.
I know it must be hard to make it work with all of the possible color combinations, and it's probably easier to just pull one color and use it everywhere in the article view, but I think this one thing would be an improvement.