diff --git a/DEVELOPER.md b/DEVELOPER.md
index 6f1aca6..f8a7396 100644
--- a/DEVELOPER.md
+++ b/DEVELOPER.md
@@ -41,6 +41,12 @@ If you'd like to create a production build, choose "Any Mac" as the target and s
 10. Update Cask with new version + hash
 11. Check new version can be installed via Cask
 
+## 🍱 Marketing Mode
+
+You can enable marketing mode by setting the `PHPMON_MARKETING_MODE` environment variable. It preloads a list of (fake) domains in the domain window list for screenshot & marketing purposes.
+
+    launchctl setenv PHPMON_MARKETING_MODE true
+
 ## 🐛 Symbolication of crashes
 
 If you have an archived build of the app and exported the DSYM, it is possible to symbolicate .ips crash logs.
diff --git a/PHP Monitor.xcodeproj/project.pbxproj b/PHP Monitor.xcodeproj/project.pbxproj
index 40ea8b5..ef30296 100644
--- a/PHP Monitor.xcodeproj/project.pbxproj	
+++ b/PHP Monitor.xcodeproj/project.pbxproj	
@@ -1587,7 +1587,7 @@
 		C41C1B4422B0098000E7CF16 /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
-				ASSETCATALOG_COMPILER_APPICON_NAME = AppIconDev;
+				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				ASSETCATALOG_COMPILER_GLOBAL_ACCENT_COLOR_NAME = AppColor;
 				CODE_SIGN_ENTITLEMENTS = phpmon/phpmon.entitlements;
 				CODE_SIGN_IDENTITY = "Apple Development";
@@ -1603,7 +1603,7 @@
 					"@executable_path/../Frameworks",
 				);
 				MACOSX_DEPLOYMENT_TARGET = 11.0;
-				MARKETING_VERSION = "5.4-dev";
+				MARKETING_VERSION = 5.4;
 				PRODUCT_BUNDLE_IDENTIFIER = com.nicoverbruggen.phpmon;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				PROVISIONING_PROFILE_SPECIFIER = "";
@@ -1614,7 +1614,7 @@
 		C41C1B4522B0098000E7CF16 /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
-				ASSETCATALOG_COMPILER_APPICON_NAME = AppIconDev;
+				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				ASSETCATALOG_COMPILER_GLOBAL_ACCENT_COLOR_NAME = AppColor;
 				CODE_SIGN_ENTITLEMENTS = phpmon/phpmon.entitlements;
 				CODE_SIGN_IDENTITY = "Apple Development";
@@ -1630,7 +1630,7 @@
 					"@executable_path/../Frameworks",
 				);
 				MACOSX_DEPLOYMENT_TARGET = 11.0;
-				MARKETING_VERSION = "5.4-dev";
+				MARKETING_VERSION = 5.4;
 				PRODUCT_BUNDLE_IDENTIFIER = com.nicoverbruggen.phpmon;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				PROVISIONING_PROFILE_SPECIFIER = "";
diff --git a/README.md b/README.md
index 6ff52e1..7532f33 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,8 @@
 
 **PHP Monitor** (or *phpmon*) is a lightweight macOS utility app that runs on your Mac and displays the active PHP version in your status bar. It's tightly integrated with [Laravel Valet](https://github.com/laravel/valet), so <u>you need to have it set up before you can use this app</u> (consult the FAQ below with info about how to set up your environment).
 
-<img src="./docs/screenshot.jpg" width="1085px" alt="phpmon screenshot (menu bar app)"/>
+<img src="./docs/screenshot.jpg#gh-light-mode-only" width="1280px" alt="phpmon screenshot (menu bar app)"/>
+<img src="./docs/screenshot-dark.jpg#gh-dark-mode-only" width="1280px" alt="phpmon screenshot (menu bar app)"/>
 
 <small><i>Screenshot: Showing the key functionality of PHP Monitor.</i></small>
 
diff --git a/docs/screenshot-dark.jpg b/docs/screenshot-dark.jpg
new file mode 100644
index 0000000..2b5d623
Binary files /dev/null and b/docs/screenshot-dark.jpg differ
diff --git a/docs/screenshot.jpg b/docs/screenshot.jpg
index 8303e9b..0b90233 100644
Binary files a/docs/screenshot.jpg and b/docs/screenshot.jpg differ