diff --git a/colorschemes/Makefile b/colorschemes/Makefile
new file mode 100644
index 0000000..8d90804
--- /dev/null
+++ b/colorschemes/Makefile
@@ -0,0 +1,23 @@
+# https://tech.davis-hansson.com/p/make/
+SHELL := bash
+.ONESHELL:
+.SHELLFLAGS := -eu -o pipefail -c
+.DELETE_ON_ERROR:
+MAKEFLAGS += --warn-undefined-variables
+MAKEFLAGS += --no-builtin-rules
+
+.PHONY: all clean
+
+OUT_DIR := out
+OUT_FILES := iterm.itermcolors kitty.conf vim.vim setvtrgb.txt zsh.zsh termux.properties
+
+all: $(OUT_DIR) $(addprefix $(OUT_DIR)/,$(OUT_FILES))
+
+clean:
+	rm -rv out
+
+out:
+	mkdir -p $@
+
+$(OUT_DIR)/%: %.py
+	./$< > $@
diff --git a/colorschemes/build.sh b/colorschemes/build.sh
deleted file mode 100755
index 2c504f8..0000000
--- a/colorschemes/build.sh
+++ /dev/null
@@ -1,22 +0,0 @@
-#!/usr/bin/env bash
-
-set -e
-
-cd "$(dirname "${BASH_SOURCE[0]}")"
-
-mkdir -p out
-
-declare -A apps=(
-  [iterm]=itermcolors
-  [kitty]=conf
-  [nvim]=vim
-  [setvtrgb]=txt
-  [shell]=zsh
-  [termux]=properties
-)
-
-for app in "${!apps[@]}"; do
-  output_file="$app.${apps[$app]}"
-  echo "$output_file"
-  ./"$app".py > ./out/"$output_file"
-done
diff --git a/colorschemes/iterm.py b/colorschemes/iterm.itermcolors.py
similarity index 100%
rename from colorschemes/iterm.py
rename to colorschemes/iterm.itermcolors.py
diff --git a/colorschemes/kitty.py b/colorschemes/kitty.conf.py
similarity index 100%
rename from colorschemes/kitty.py
rename to colorschemes/kitty.conf.py
diff --git a/colorschemes/out/nvim.vim b/colorschemes/out/vim.vim
similarity index 100%
rename from colorschemes/out/nvim.vim
rename to colorschemes/out/vim.vim
diff --git a/colorschemes/out/shell.zsh b/colorschemes/out/zsh.zsh
similarity index 100%
rename from colorschemes/out/shell.zsh
rename to colorschemes/out/zsh.zsh
diff --git a/colorschemes/setvtrgb.py b/colorschemes/setvtrgb.txt.py
similarity index 100%
rename from colorschemes/setvtrgb.py
rename to colorschemes/setvtrgb.txt.py
diff --git a/colorschemes/termux.py b/colorschemes/termux.properties.py
similarity index 100%
rename from colorschemes/termux.py
rename to colorschemes/termux.properties.py
diff --git a/colorschemes/nvim.py b/colorschemes/vim.vim.py
similarity index 100%
rename from colorschemes/nvim.py
rename to colorschemes/vim.vim.py
diff --git a/colorschemes/shell.py b/colorschemes/zsh.zsh.py
similarity index 100%
rename from colorschemes/shell.py
rename to colorschemes/zsh.zsh.py
diff --git a/nvim/colors/dotfiles.vim b/nvim/colors/dotfiles.vim
index b418764..07ccfca 100644
--- a/nvim/colors/dotfiles.vim
+++ b/nvim/colors/dotfiles.vim
@@ -3,7 +3,7 @@
 
 " Color definitions {{{
 
-  execute 'source' fnameescape(g:nvim_dotfiles_dir.'/../colorschemes/out/nvim.vim')
+  execute 'source' fnameescape(g:nvim_dotfiles_dir.'/../colorschemes/out/vim.vim')
 
   if !&termguicolors && exists('$_COLORSCHEME_TERMINAL')
     set notermguicolors
diff --git a/zsh/colorscheme.zsh b/zsh/colorscheme.zsh
index 73f5275..bd4d4a4 100644
--- a/zsh/colorscheme.zsh
+++ b/zsh/colorscheme.zsh
@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 # partially based on https://github.com/chriskempson/base16-shell/blob/master/templates/default.mustache
 
-source "$ZSH_DOTFILES/../colorschemes/out/shell.zsh"
+source "$ZSH_DOTFILES/../colorschemes/out/zsh.zsh"
 
 if [[ -n "$TMUX" ]]; then
   # tmux