diff --git a/README.md b/README.md
index d72027c..f4ab1ee 100644
--- a/README.md
+++ b/README.md
@@ -208,7 +208,8 @@ All configuration options are in `~/.config/caelestia/cli.json`.
         "enableWarp": true,
         "enableChromium": true,
         "enableZed": true,
-        "enableCava": true
+        "enableCava": true,
+        "postHook": "echo $SCHEME_NAME $SCHEME_FLAVOUR $SCHEME_MODE $SCHEME_VARIANT $SCHEME_COLOURS"
     },
     "toggles": {
         "communication": {
diff --git a/src/caelestia/utils/theme.py b/src/caelestia/utils/theme.py
index 2fdafd3..9fc95f4 100644
--- a/src/caelestia/utils/theme.py
+++ b/src/caelestia/utils/theme.py
@@ -1,5 +1,6 @@
 import fcntl
 import json
+import os
 import re
 import shutil
 import subprocess
@@ -17,6 +18,7 @@ from caelestia.utils.paths import (
     user_config_path,
     user_templates_dir,
 )
+from caelestia.utils.scheme import get_scheme
 
 
 def gen_conf(colours: dict[str, str]) -> str:
@@ -456,6 +458,22 @@ def apply_colours(colours: dict[str, str], mode: str) -> None:
                 apply_cava(colours)
             apply_user_templates(colours, mode)
 
+            if post_hook := cfg.get("postHook"):
+                scheme = get_scheme()
+                subprocess.run(
+                    post_hook,
+                    shell=True,
+                    env={
+                        **os.environ,
+                        "SCHEME_NAME": scheme.name,
+                        "SCHEME_FLAVOUR": scheme.flavour,
+                        "SCHEME_MODE": scheme.mode,
+                        "SCHEME_VARIANT": scheme.variant,
+                        "SCHEME_COLOURS": json.dumps(scheme.colours),
+                    },
+                    stderr=subprocess.DEVNULL,
+                )
+
     finally:
         try:
             lock_file.unlink()