Fix oh-my-zsh theme issues on update

Makefile

@@ -51,7 +51,7 @@ emacs:
 oh-my-zsh:
 	@printf "$(YELLOW)--- oh-my-zsh ------------------------------------------\n$(RESET)"
 	git clone https://github.com/ohmyzsh/ohmyzsh.git ~/.oh-my-zsh
-	cp oh-my-zsh/themes/agnoster.zsh-theme ~/.oh-my-zsh/themes/
+	ln -sf ~/dotfiles/oh-my-zsh/themes/agnoster-custom.zsh-theme ~/.oh-my-zsh/themes/agnoster-custom.zsh-theme
 	git clone https://github.com/zsh-users/zsh-syntax-highlighting.git ~/.oh-my-zsh/plugins/zsh-syntax-highlighting
 
 polybar:

zsh/.zshrc

@@ -8,7 +8,7 @@ export ZSH="$HOME/.oh-my-zsh"
 # load a random theme each time oh-my-zsh is loaded, in which case,
 # to know which specific one was loaded, run: echo $RANDOM_THEME
 # See https://github.com/ohmyzsh/ohmyzsh/wiki/Themes
-ZSH_THEME="agnoster"
+ZSH_THEME="agnoster-custom"
 
 # Set list of themes to pick from when loading at random
 # Setting this variable when ZSH_THEME=random will cause zsh to load