How to install:

if not already done install git, zsh, tmux and vim:

$ sudo apt-get install git zsh tmux vim

install oh-my-zsh and Vundle by following these steps

https://github.com/robbyrussell/oh-my-zsh
https://github.com/VundleVim/Vundle.vim

setup a patched font if you want to use tmux.surface v1.2

https://github.com/powerline/fonts

clone my repo into your home folder

$ cd ~
$ git clone https://github.com/erikschreier/PaperColor-themes

backup your existing .tmux.conf and .vimrc file

$ mkdir backup
$ mv .vimrc .tmux.conf ~/backup

copy the files now into your home folder

$ cd PaperColor-themes
$ cp -r .vimrc .vim .tmux.conf .tmux .oh-my-zsh ~/

install the plugins for vim (ignore the errors)

$ vim +PluginInstall

change the theme in your .zshrc and add some aliasses at the bottom

$ vim ~/.zshrc

...
ZSH_THEME="warlord"
...
#alias ohmyzsh="mate ~/.oh-my-zsh"
alias tmux-n="tmux -2 new -s"
alias tmux-o="tmux -2 attach -t"
alias tmux-k="tmux kill-session -t"

Restart your terminal after the installation and you should see the zsh prompt (if not restart your System). Follow the crashcourse in the screenshot to learn how to use tmux and get familiar with the setup. To use the powerline theme just copy and rename the .tmux/.tmux.conf.surface_powerline file or rewrite the .tmux.conf to use it. Remember you have to use a powerline patched fonts (if not yo'll see weird glyphs in the statusbar.)

Troubleshooting

tmux shows weird colors:

inside your terminal (not in tmux) run 'echo $TERM' to find out your terminal emulator and modify the first line of the ~/.tmux/.tmux.conf.options file to fit your setup (may you have to use google for the correct setting). If that not works then make sure you added the -2 in the alias section of your ~/.zshrc to force tmux to start in truecolor mode.

Shell is still Bash:

Run 'chsh' inside your terminal, enter /bin/zsh and restart your terminal.

Vim uses unix as fileformat on my Mac:

Open the file ~/.vim/.vimrc.aufiles and change the encoding in line 36 and 37.

Enjoy the theme and feel free to modify.