Did you follow my previous tutorial to install Plank on Fedora 23? If so, you may want to expand your Plank capability and usability with this Plank Themer. Plank Themer is a small program that allow us to change Plank Theme easily. Once we install it, we can choose many Plank Theme using mouse click. No command line needed to change Plank Theme.
To install Plank Themer on Fedora 23, open Terminal and paste the following command. Its a single command.
You will be asked to enter root password during installation. Once complete, you will see a black icon listed on Plank.