To use base16 themes in Lem editor run
$ ros install lukpank/lem-base16-themes
then add to your ~/.lem/init.lisp the following lines
(load-library "base16-themes")
(load-theme "espresso")
changing the theme espresso to the theme you want to use.
You can also change the theme interactively with M-x load-theme.
To regenerate src/themes.lisp run in slime REPL
(load "/path/to/lem-base16-themes/lem-base16-themes-generate.asd")
(ql:quickload "lem-base16-themes-generate")
(lem-base16-themes-generate:regenerate-themes)
Licensed under MIT License.
Łukasz Pankowski