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/albert.git
Download using the GitHub .zip download option and unzip them.
sudo cp DraculaPurple.qss /usr/share/albert/org.albert.frontend.widgetboxmodel/themes
DraculaPurple.qsswith the name of the colour theme you would like to install.
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