If you are a git user, you can install the theme and keep up to date by cloning the repo:
git clone https://github.com/dracula/godot.git
Download using the GitHub .zip download option and unzip them.
cat 'OBTAINED_PATH/theme.tres' >> 'GODOT_PATH/editor_settings-3.tres'
$HOME/.config/godot if installed from Godot
$HOME/.steam/steam/steamapps/common/Godot Engine/editor_data if installed with Steam
Get-Content 'OBTAINED_PATH\theme.tres' | Add-Content 'GODOT_PATH\editor_settings-3.tres'
$env:APPDATA\Godot if installed from Godot
C:\Program Files (x86)\Steam\steamapps\common\Godot Engine\editor_data if installed with Steam
Get updates about this theme and more. 6,852 people enjoy it.
This theme wouldn't exist without these people. Wanna help too? Check the repository on GitHub.