On my Ubuntu 18.10 laptop, whenever I download a file in Chrome I cannot read the warnings or button at the bottom of the screen. Like this:
Anyone know what is wrong here?
This reported issue is seen with various "dark" themes including the dark variants of Adwaita, Materia, and Yaru.
Using a light GTK theme fixes the issue. But it is still possible to use a dark GTK theme and to have the contents of the Downloads bar visible. This requires Google Chrome v73 (or later).
Open Google Chrome > Settings > Appearance > Themes. There, ensure that Classic is being used and not GTK.
Close the browser and launch it like this:
google-chrome-stable --enable-features=WebUIDarkMode --force-dark-mode
Now, when you download something, the Download bar appears properly even with a dark GTK theme such as Yaru-Dark.
Google Chrome's download bar with Yaru-Dark
While the dark-mode switches to launch the browser are needed in version 73, they probably will not be necessary in later versions.
--force-dark-modeto CHROMIUM_FLAGS variable in /etc/chromium-browser/default do the trick :D !!! Thanks to this post: How to change the color of Chromium (only chrome) downloads bar in a GTK3 theme?