diff --git a/README.md b/README.md
index 2995f43..32a6322 100644
--- a/README.md
+++ b/README.md
@@ -27,32 +27,16 @@ This theme was known previously as »*ag.proton*« — but let's be honest: That
 
   - Default
   ```sh
-  sh <(curl https://raw.githubusercontent.com/andreasgrafen/cascade/main/installer/default.sh)
+  sh -c "$(curl -sSL https://raw.githubusercontent.com/andreasgrafen/cascade/main/installer.sh)"
   ```
-  - gruvbox
-  ```sh
-  sh <(curl https://raw.githubusercontent.com/andreasgrafen/cascade/main/installer/gruvbox.sh)
-  ```
-  - rosepine-default
-  ```sh
-  sh <(curl https://raw.githubusercontent.com/andreasgrafen/cascade/main/installer/rosepine-default.sh)
-  ```
-  - rosepine-moon
-  ```sh
-  sh <(curl https://raw.githubusercontent.com/andreasgrafen/cascade/main/installer/rosepine-moon.sh)
-  ```
-  - catppuccin-frappe
-  ```sh
-  sh <(curl https://raw.githubusercontent.com/andreasgrafen/cascade/main/installer/catppuccin-frappe.sh)
-  ```
-  - catppuccin-macchiato
-  ```sh
-  sh <(curl https://raw.githubusercontent.com/andreasgrafen/cascade/main/installer/catppuccin-macchiato.sh)
-  ```
-  - catppuccin-mocha
+
+  - Selecting a theme
   ```sh
-  sh <(curl https://raw.githubusercontent.com/andreasgrafen/cascade/main/installer/catppuccin-mocha.sh)
+  sh -c "$(curl -sSL https://raw.githubusercontent.com/andreasgrafen/cascade/main/installer.sh) gruvbox"
   ```
+
+  > **Note** You can select from multiple themes like catppuccin, rose pine, or gruvbox. Themes are available in "integrations/". Replace in the previous example "gruvbox" with your desired theme.
+
   > **Note** On NixOS, you can modify `toolkit.legacyUserProfileCustomizations.stylesheets` by setting `"DisableProfileCustomizations": true` on your `policies` config, or execute one of the installer scripts using `post-build-hook = installer.sh`
 
   > **Note** You can configure it manually following the MacOS and Windows steps with the next path for Linux `$HOME/.mozilla/firefox/######.default-release/`
@@ -87,7 +71,7 @@ It seems like `flexbox` (within the Firefox UI) is inheritly broken on Windows.
 <details>
   <summary>Theming</summary>
 
-  Set your theme: You can change between multiple themes by replacing the content in `chrome/includes/cascade-colours.css` with one of the themes in `integrations/theme/theme.css`
+  Set your theme: You can change between multiple themes by replacing the content in `chrome/includes/cascade-colours.css` with one of the themes in `integrations/theme.css`
 
   This are the themes available:
 
diff --git a/installer/catppuccin-frappe.sh b/installer.sh
similarity index 76%
rename from installer/catppuccin-frappe.sh
rename to installer.sh
index f8471cd..3b9c9c4 100644
--- a/installer/catppuccin-frappe.sh
+++ b/installer.sh
@@ -1,10 +1,14 @@
 #!/bin/sh
-DEFAULT_FIREFOX_PROFILE=$(ls $HOME/.mozilla/firefox/ | grep default | awk -F' ' '{print $NF}')
+DEFAULT_FIREFOX_PROFILE=$(grep 'Path=' "$firefox_profiles_dir/profiles.ini" | cut -d= -f2)
 rm $HOME/.mozilla/firefox/$DEFAULT_FIREFOX_PROFILE/chrome -rf
 cd $HOME/.mozilla/firefox/$DEFAULT_FIREFOX_PROFILE
 git clone https://github.com/iruzo/cascade && mv cascade/chrome .
-mv cascade/integrations/catppuccin/cascade-frappe.css chrome/includes/cascade-colours.css
-rm cascade -rf
+
+# configure desired theme
+if [ "$#" -gt 0 ]; then
+  mv cascade/integrations/cascade-$1.css chrome/includes/cascade-colours.css
+  rm cascade -rf
+fi
 
 # change toolkit.legacyUserProfileCustomizations.stylesheets
 if [ ! -e "$HOME/.mozilla/firefox/$DEFAULT_FIREFOX_PROFILE/prefs.js" ]; then
diff --git a/installer/catppuccin-macchiato.sh b/installer/catppuccin-macchiato.sh
deleted file mode 100644
index 5028042..0000000
--- a/installer/catppuccin-macchiato.sh
+++ /dev/null
@@ -1,19 +0,0 @@
-#!/bin/sh
-DEFAULT_FIREFOX_PROFILE=$(ls $HOME/.mozilla/firefox/ | grep default | awk -F' ' '{print $NF}')
-rm $HOME/.mozilla/firefox/$DEFAULT_FIREFOX_PROFILE/chrome -rf
-cd $HOME/.mozilla/firefox/$DEFAULT_FIREFOX_PROFILE
-git clone https://github.com/iruzo/cascade && mv cascade/chrome .
-mv cascade/integrations/catppuccin/cascade-macchiato.css chrome/includes/cascade-colours.css
-rm cascade -rf
-
-# change toolkit.legacyUserProfileCustomizations.stylesheets
-if [ ! -e "$HOME/.mozilla/firefox/$DEFAULT_FIREFOX_PROFILE/prefs.js" ]; then
-  echo "File 'foo' does not exist."
-  exit 1
-fi
-
-if grep -q "user_pref(\"toolkit.legacyUserProfileCustomizations.stylesheets\", true);" "$HOME/.mozilla/firefox/$DEFAULT_FIREFOX_PROFILE/prefs.js"; then
-  echo "legacyUserProfileCustomizations is already true on users settings"
-else
-  echo "user_pref(\"toolkit.legacyUserProfileCustomizations.stylesheets\", true);" >> "$HOME/.mozilla/firefox/$DEFAULT_FIREFOX_PROFILE/prefs.js"
-fi
diff --git a/installer/catppuccin-mocha.sh b/installer/catppuccin-mocha.sh
deleted file mode 100644
index 0042207..0000000
--- a/installer/catppuccin-mocha.sh
+++ /dev/null
@@ -1,19 +0,0 @@
-#!/bin/sh
-DEFAULT_FIREFOX_PROFILE=$(ls $HOME/.mozilla/firefox/ | grep default | awk -F' ' '{print $NF}')
-rm $HOME/.mozilla/firefox/$DEFAULT_FIREFOX_PROFILE/chrome -rf
-cd $HOME/.mozilla/firefox/$DEFAULT_FIREFOX_PROFILE
-git clone https://github.com/iruzo/cascade && mv cascade/chrome .
-mv cascade/integrations/catppuccin/cascade-mocha.css chrome/includes/cascade-colours.css
-rm cascade -rf
-
-# change toolkit.legacyUserProfileCustomizations.stylesheets
-if [ ! -e "$HOME/.mozilla/firefox/$DEFAULT_FIREFOX_PROFILE/prefs.js" ]; then
-  echo "File 'foo' does not exist."
-  exit 1
-fi
-
-if grep -q "user_pref(\"toolkit.legacyUserProfileCustomizations.stylesheets\", true);" "$HOME/.mozilla/firefox/$DEFAULT_FIREFOX_PROFILE/prefs.js"; then
-  echo "legacyUserProfileCustomizations is already true on users settings"
-else
-  echo "user_pref(\"toolkit.legacyUserProfileCustomizations.stylesheets\", true);" >> "$HOME/.mozilla/firefox/$DEFAULT_FIREFOX_PROFILE/prefs.js"
-fi
diff --git a/installer/default.sh b/installer/default.sh
deleted file mode 100644
index e5d1036..0000000
--- a/installer/default.sh
+++ /dev/null
@@ -1,18 +0,0 @@
-#!/bin/sh
-DEFAULT_FIREFOX_PROFILE=$(ls $HOME/.mozilla/firefox/ | grep default | awk -F' ' '{print $NF}')
-rm $HOME/.mozilla/firefox/$DEFAULT_FIREFOX_PROFILE/chrome -rf
-cd $HOME/.mozilla/firefox/$DEFAULT_FIREFOX_PROFILE
-git clone https://github.com/iruzo/cascade && mv cascade/chrome .
-rm cascade -rf
-
-# change toolkit.legacyUserProfileCustomizations.stylesheets
-if [ ! -e "$HOME/.mozilla/firefox/$DEFAULT_FIREFOX_PROFILE/prefs.js" ]; then
-  echo "File 'foo' does not exist."
-  exit 1
-fi
-
-if grep -q "user_pref(\"toolkit.legacyUserProfileCustomizations.stylesheets\", true);" "$HOME/.mozilla/firefox/$DEFAULT_FIREFOX_PROFILE/prefs.js"; then
-  echo "legacyUserProfileCustomizations is already true on users settings"
-else
-  echo "user_pref(\"toolkit.legacyUserProfileCustomizations.stylesheets\", true);" >> "$HOME/.mozilla/firefox/$DEFAULT_FIREFOX_PROFILE/prefs.js"
-fi
diff --git a/installer/gruvbox.sh b/installer/gruvbox.sh
deleted file mode 100644
index de0aac3..0000000
--- a/installer/gruvbox.sh
+++ /dev/null
@@ -1,19 +0,0 @@
-#!/bin/sh
-DEFAULT_FIREFOX_PROFILE=$(ls $HOME/.mozilla/firefox/ | grep default | awk -F' ' '{print $NF}')
-rm $HOME/.mozilla/firefox/$DEFAULT_FIREFOX_PROFILE/chrome -rf
-cd $HOME/.mozilla/firefox/$DEFAULT_FIREFOX_PROFILE
-git clone https://github.com/iruzo/cascade && mv cascade/chrome .
-mv cascade/integrations/gruvbox/cascade-gruvbox.css chrome/includes/cascade-colours.css
-rm cascade -rf
-
-# change toolkit.legacyUserProfileCustomizations.stylesheets
-if [ ! -e "$HOME/.mozilla/firefox/$DEFAULT_FIREFOX_PROFILE/prefs.js" ]; then
-  echo "File 'foo' does not exist."
-  exit 1
-fi
-
-if grep -q "user_pref(\"toolkit.legacyUserProfileCustomizations.stylesheets\", true);" "$HOME/.mozilla/firefox/$DEFAULT_FIREFOX_PROFILE/prefs.js"; then
-  echo "legacyUserProfileCustomizations is already true on users settings"
-else
-  echo "user_pref(\"toolkit.legacyUserProfileCustomizations.stylesheets\", true);" >> "$HOME/.mozilla/firefox/$DEFAULT_FIREFOX_PROFILE/prefs.js"
-fi
diff --git a/installer/rosepine-default.sh b/installer/rosepine-default.sh
deleted file mode 100644
index d76fece..0000000
--- a/installer/rosepine-default.sh
+++ /dev/null
@@ -1,19 +0,0 @@
-#!/bin/sh
-DEFAULT_FIREFOX_PROFILE=$(ls $HOME/.mozilla/firefox/ | grep default | awk -F' ' '{print $NF}')
-rm $HOME/.mozilla/firefox/$DEFAULT_FIREFOX_PROFILE/chrome -rf
-cd $HOME/.mozilla/firefox/$DEFAULT_FIREFOX_PROFILE
-git clone https://github.com/iruzo/cascade && mv cascade/chrome .
-mv cascade/integrations/rose-pine/cascade-rose-pine.css chrome/includes/cascade-colours.css
-rm cascade -rf
-
-# change toolkit.legacyUserProfileCustomizations.stylesheets
-if [ ! -e "$HOME/.mozilla/firefox/$DEFAULT_FIREFOX_PROFILE/prefs.js" ]; then
-  echo "File 'foo' does not exist."
-  exit 1
-fi
-
-if grep -q "user_pref(\"toolkit.legacyUserProfileCustomizations.stylesheets\", true);" "$HOME/.mozilla/firefox/$DEFAULT_FIREFOX_PROFILE/prefs.js"; then
-  echo "legacyUserProfileCustomizations is already true on users settings"
-else
-  echo "user_pref(\"toolkit.legacyUserProfileCustomizations.stylesheets\", true);" >> "$HOME/.mozilla/firefox/$DEFAULT_FIREFOX_PROFILE/prefs.js"
-fi
diff --git a/installer/rosepine-moon.sh b/installer/rosepine-moon.sh
deleted file mode 100644
index 1b455f3..0000000
--- a/installer/rosepine-moon.sh
+++ /dev/null
@@ -1,19 +0,0 @@
-#!/bin/sh
-DEFAULT_FIREFOX_PROFILE=$(ls $HOME/.mozilla/firefox/ | grep default | awk -F' ' '{print $NF}')
-rm $HOME/.mozilla/firefox/$DEFAULT_FIREFOX_PROFILE/chrome -rf
-cd $HOME/.mozilla/firefox/$DEFAULT_FIREFOX_PROFILE
-git clone https://github.com/iruzo/cascade && mv cascade/chrome .
-mv cascade/integrations/rose-pine/cascade-moon.css chrome/includes/cascade-colours.css
-rm cascade -rf
-
-# change toolkit.legacyUserProfileCustomizations.stylesheets
-if [ ! -e "$HOME/.mozilla/firefox/$DEFAULT_FIREFOX_PROFILE/prefs.js" ]; then
-  echo "File 'foo' does not exist."
-  exit 1
-fi
-
-if grep -q "user_pref(\"toolkit.legacyUserProfileCustomizations.stylesheets\", true);" "$HOME/.mozilla/firefox/$DEFAULT_FIREFOX_PROFILE/prefs.js"; then
-  echo "legacyUserProfileCustomizations is already true on users settings"
-else
-  echo "user_pref(\"toolkit.legacyUserProfileCustomizations.stylesheets\", true);" >> "$HOME/.mozilla/firefox/$DEFAULT_FIREFOX_PROFILE/prefs.js"
-fi
diff --git a/integrations/catppuccin/cascade-frappe.css b/integrations/cascade-frappe.css
similarity index 100%
rename from integrations/catppuccin/cascade-frappe.css
rename to integrations/cascade-frappe.css
diff --git a/integrations/gruvbox/cascade-gruvbox.css b/integrations/cascade-gruvbox.css
similarity index 100%
rename from integrations/gruvbox/cascade-gruvbox.css
rename to integrations/cascade-gruvbox.css
diff --git a/integrations/catppuccin/cascade-macchiato.css b/integrations/cascade-macchiato.css
similarity index 100%
rename from integrations/catppuccin/cascade-macchiato.css
rename to integrations/cascade-macchiato.css
diff --git a/integrations/catppuccin/cascade-mocha.css b/integrations/cascade-mocha.css
similarity index 100%
rename from integrations/catppuccin/cascade-mocha.css
rename to integrations/cascade-mocha.css
diff --git a/integrations/rose-pine/cascade-moon.css b/integrations/cascade-moon.css
similarity index 100%
rename from integrations/rose-pine/cascade-moon.css
rename to integrations/cascade-moon.css
diff --git a/integrations/rose-pine/cascade-rose-pine.css b/integrations/cascade-rosepine.css
similarity index 100%
rename from integrations/rose-pine/cascade-rose-pine.css
rename to integrations/cascade-rosepine.css