Hi. I'm having the same issue as emmyjemmyjammy (LOL). Installed the theme on /usr/share/aseprite/data/extensions/minimaldark, Aseprite reads it and i can "apply" it but nothing happens. Archlinux, Aseprite 1.2.18-dev
Viewing post in Minimal Dark HD Aseprite Theme comments
Hey there. Thanks. Followed this and worked: https://github.com/aseprite/themes/issues/3