Use gruvbox8 colorscheme and true colors.

README.md

@@ -13,9 +13,8 @@ source ~/dotfiles/prompt.sh
 
 ## Configure vim
 
-Install the jellybeans colorscheme, either by downloading `jellybeans.vim` into
-`.vim/colors/`, or by installing a plugin manager and using it to install
-jellybeans.
+Install the [gruvbox8](https://github.com/lifepillar/vim-gruvbox8) colorscheme,
+specifically the `gruvbox8_hard` variant.
 
 Then add the following to your `.vimrc`:
 

config.vim

@@ -21,8 +21,15 @@ set hlsearch
 " Jump to search results as user types search query.
 set incsearch
 
+" Enable true colors. See also `:help xterm-true-color`.
+let &t_8f = "\<Esc>[38:2:%lu:%lu:%lum"
+let &t_8b = "\<Esc>[48:2:%lu:%lu:%lum"
+set termguicolors
+
+
 " Use a nice color scheme.
-colorscheme jellybeans
+colorscheme gruvbox8_hard
+set background=dark
 
 
 " Formatting options.