diff --git a/.gitignore b/.gitignore
index 97089ae..9b0069a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,4 @@
 *.swp
 
 .profiles
+.color-scheme
diff --git a/bin/set-colors b/bin/set-colors
index 2e26146..ccfd402 100755
--- a/bin/set-colors
+++ b/bin/set-colors
@@ -1,21 +1,32 @@
 #!/usr/bin/env bash
 
+set -euo pipefail
+
 # "Automate" flipping applications between light and dark themes.
 
 DOTFILES="$(cd "$(dirname "$(dirname "$(realpath "${BASH_SOURCE[0]}")")")" && pwd)"
+SCHEME_FILE="${DOTFILES}/.color-scheme"
 
-scheme="${1:-dark}"
+if [ -f "${SCHEME_FILE}" ]; then
+    default_scheme="$(head -n 1 "${SCHEME_FILE}")"
+else
+    default_scheme='dark'
+fi
+
+scheme="${1:-${default_scheme}}"
 
 if [ "${scheme}" = 'dark' ]; then
     ln -sf "${DOTFILES}/alacritty/colors-dark.yml" "${DOTFILES}/alacritty/colors.yml"
     ln -sf "${DOTFILES}/vim/colors/jdkaplan-dark.vim" "${DOTFILES}/vim/colors/jdkaplan.vim"
     ln -sf "${DOTFILES}/task/jdkaplan-dark.theme" "${DOTFILES}/task/color.theme"
     "${DOTFILES}/alacritty/install"
+    echo "$scheme" > "${SCHEME_FILE}"
 elif [ "${scheme}" = 'light' ]; then
     ln -sf "${DOTFILES}/alacritty/colors-light.yml" "${DOTFILES}/alacritty/colors.yml"
     ln -sf "${DOTFILES}/vim/colors/jdkaplan-light.vim" "${DOTFILES}/vim/colors/jdkaplan.vim"
     ln -sf "${DOTFILES}/task/jdkaplan-light.theme" "${DOTFILES}/task/color.theme"
     "${DOTFILES}/alacritty/install"
+    echo "$scheme" > "${SCHEME_FILE}"
 else
     echo "Unknown color scheme: ${scheme}"
     exit 1
diff --git a/default.conf.yaml b/default.conf.yaml
index 0cd033d..5107911 100644
--- a/default.conf.yaml
+++ b/default.conf.yaml
@@ -2,7 +2,7 @@
     - mkdir -p ~/.config
     - mkdir -p ~/.config/direnv
     - mkdir -p ~/.task
-    - ./bin/set-colors dark
+    - ./bin/set-colors
 
 - clean: ['~', '~/.config']