I’ve got a fix here that should do the trick
https://github.com/discourse/discourse/commit/e6e5ce3c5413b2fa85d87660bc443dfb1557576c
The problem is that the digest background color isn’t being dictated by the theme colors (it’s static grey), and the colors of those two links were a theme variable. So light text from dark themes ended up on a light grey background.
Something related that may be helpful to someone looking at the digest in the future… the background color of the email is set on the HTML tag… and a lot of email clients (like gmail) will just ignore that style and make the email background white anyway… so even if the background color was defined by a theme, it wouldn’t be reliable:
