diff --git a/mailcow/src/mailcow-dockerized/data/conf/sogo/custom-favicon.ico b/mailcow/src/mailcow-dockerized/data/conf/sogo/custom-favicon.ico
new file mode 100644
index 0000000..4d5cb32
--- /dev/null
+++ b/mailcow/src/mailcow-dockerized/data/conf/sogo/custom-favicon.ico
Binary files differ
diff --git a/mailcow/src/mailcow-dockerized/data/conf/sogo/custom-theme.js b/mailcow/src/mailcow-dockerized/data/conf/sogo/custom-theme.js
new file mode 100644
index 0000000..0df5067
--- /dev/null
+++ b/mailcow/src/mailcow-dockerized/data/conf/sogo/custom-theme.js
@@ -0,0 +1,36 @@
+/* EXAMPLE - EXAMPLE - EXAMPLE - EXAMPLE - EXAMPLE - EXAMPLE - EXAMPLE
+(function() {
+  'use strict';
+  angular.module('SOGo.Common')
+    .config(configure)
+
+  configure.$inject = ['$mdThemingProvider'];
+  function configure($mdThemingProvider) {
+    var greyMap = $mdThemingProvider.extendPalette('grey', {
+      '200': 'F5F5F5',
+      '300': 'E5E5E5',
+      '1000': '4C566A'
+    });
+    var greenCow = $mdThemingProvider.extendPalette('green', {
+      '600': 'E5E5E5'
+    });
+    $mdThemingProvider.definePalette('frost-grey', greyMap);
+    $mdThemingProvider.definePalette('green-cow', greenCow);
+    $mdThemingProvider.theme('default')
+      .primaryPalette('green-cow', {
+        'default': '400',
+        'hue-1': '400',
+        'hue-2': '600',
+        'hue-3': 'A700'
+      })
+      .accentPalette('green', {
+        'default': '600',
+        'hue-1': '300',
+        'hue-2': '300',
+        'hue-3': 'A700'
+      })
+      .backgroundPalette('frost-grey');
+    $mdThemingProvider.generateThemesOnDemand(false);
+  }
+})();
+ */
\ No newline at end of file
diff --git a/mailcow/src/mailcow-dockerized/data/conf/sogo/sogo-full.svg b/mailcow/src/mailcow-dockerized/data/conf/sogo/sogo-full.svg
deleted file mode 100644
index 98ff2fc..0000000
--- a/mailcow/src/mailcow-dockerized/data/conf/sogo/sogo-full.svg
+++ /dev/null
@@ -1,44 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- Generator: Adobe Illustrator 16.0.0, SVG Export Plug-In . SVG Version: 6.00 Build 0)  -->
-<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd" [
-	<!ENTITY st0 "fill:#50BD37;">
-]>
-<svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
-	 width="640px" height="350px" viewBox="78.712 58.488 640 350" style="enable-background:new 78.712 58.488 640 350;"
-	 xml:space="preserve">
-<path style="&st0;" d="M648.541,145.679c-9.947,0-17.009-7.278-17.009-17.048c0-9.777,7.062-17.057,17.009-17.057
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-	 M648.442,58.488c-40.929,0-69.995,29.946-69.995,70.143c0,40.189,29.066,70.125,69.995,70.125c41.194,0,70.27-29.937,70.27-70.125
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-	c-4.514,0-9.105-0.288-13.639-0.831c-8.573-0.987-19.911-4.671-28.13-11.093c-4.138-3.199-6.458-6.991-8.858-11.485
-	c-2.379-4.514-2.783-9.748-2.783-16.442v-0.742c0-12.346,4.84-20.544,11.051-26.5c3.07-2.904,5.69-5.064,7.99-6.438
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-</svg>
diff --git a/mailcow/src/mailcow-dockerized/data/conf/sogo/sogo.conf b/mailcow/src/mailcow-dockerized/data/conf/sogo/sogo.conf
index 78791d5..2513f49 100644
--- a/mailcow/src/mailcow-dockerized/data/conf/sogo/sogo.conf
+++ b/mailcow/src/mailcow-dockerized/data/conf/sogo/sogo.conf
@@ -14,7 +14,12 @@
     SOGoEnableEMailAlarms = YES;
     SOGoFoldersSendEMailNotifications = YES;
     SOGoForwardEnabled = YES;
-    SOGoUIAdditionalJSFiles = (js/custom-sogo.js);
+
+    SOGoUIAdditionalJSFiles = (
+      js/theme.js,
+      js/custom-sogo.js
+    );
+
     SOGoEnablePublicAccess = YES;
 
     // Multi-domain setup