Hi, I just followed the install instructions

nix-env -iA cachix -f https://cachix.org/api/v1/install cachix use emacs-osx nix-env -iA emacsOsxNative -f https://github.com/sagittaros/emacs-osx/archive/refs/tags/built.tar.gz 

But the application frame is light and not using the system dark mode. Am I missing a flag or option? https://emacsformacos.com, railwaycat emacs-port and d12frosted/emacs-plus all support this.