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/calibre.git
Download using the GitHub .zip
download option and unzip them.
- Click on Preferences then Look & Feel;
- Under Main interface, Click on Adjust colors;
- Set Color-palette as Dark and Import the theme;
- Press Ok and Apply;
- You will have set color of cover grid by yourself;
- Boom! It's working ✨