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/telegram-ios.git
Download using the GitHub .zip download option and unzip them.
If you want to add the theme to your iPhone open this link.
If you want to customize it, download the
themefile.txt, edit it, and upload to the Telegram online editor.
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.