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/quiver
Then manually install the file from there.
Download using the GitHub .zip download option.
Dracula.json into Quiver.
Receive updates about this theme and more about Dracula.
This theme wouldn't exist without these people. Wanna help too? Check the repository on GitHub.