Sure. First of all, you'll need an App like CandyBar. WHich is the one I used but it's not free. I know there are other apps out there that are free and do the same thing, but I don't know any names, so I won't be able to help you on that one.
You will also need to make your dock transparent before doing anything to it. So, I used
Mirage, which is very simple.
Now make the dock, you just need
GeekTool, where you will use it to create an empty shell in black colour, so you can use it as a background for the dock. You can set the opacity to your liking.
Then, just have to download the
Icon Set from the creator, and apply them with CandyBar to your dock.
Hope this helped