An Old Style Version of Deepin Dock for Latte
To install or import themes in Latte Dock, obviously, you must have Latte Dock installed.
You can do this from the KDE store or the distribution store you use.
You can also do it from the terminal by running the command: "sudo apt install latte-dock"
Once installed and with the application running, right click on any part of Latte Dock and go to "Layout" and "Settings"
when the layout configuration window appears, click on import, to import the theme that you have previously downloaded, go to the folder where the downloaded file is and import it.
I hope you enjoy them.