I did a new image and dark handling seems way better eg:
Same avatar, same user … one is old algorithm and one new.
https://global.discourse-cdn.com/meta/user_avatar/meta.discourse.org/caffeine/45/17828.png
https://global.discourse-cdn.com/meta/user_avatar/meta.discourse.org/caffeine/46/17828.png
To get latest image and update:
cd /var/discourse
git pull
./launcher rebuild app
./launcher enter app
rake avatars:clean
@zogstrip this raises a big challenge for us we kind of want to update all optimised images everywhere we host and flush cdn.
Thanks heaps @elberet