A theme meant to go with the dark variant of elementary gtk theme
If you install elementary tweaks and switch over to dark gtk the plank might look a bit off. It was easier for me to make my own theme than to try to find one existing online. I still like the elementary gtk style, just wanted the colors to change.
::: Installation :::
Unpack the archive into ~./local/share/plank/themes/
Right-click plank outside of any icon in the dock -> Settings -> Theme -> pantheon-dark
You're welcome :-D