diff --git a/CHANGELOG.md b/CHANGELOG.md
index e7d966e..6b444f0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,17 @@
 An electron-base client for Google Hangouts Chat, since Google didn't see fit to provide one.
 
 ## CHANGELOG
+### 5.27.23-1
+
+Add support for several iconThemes, to match some 'monochrome' desktop themes. 3 values are supported : 
+
+* `default` : the good old green ones
+* `colored` : the new colored google ones
+* `mono` : an attempt at monochrome icon theme
+
+Edit `~/.config/google-hangouts-chat-linux.json` and set `"iconTheme":"colored"` for instance, then **restart**.
+
+No GUI setting for now.
 
 ### 5.27.22-4
 
diff --git a/README.md b/README.md
index e75e307..570831c 100644
--- a/README.md
+++ b/README.md
@@ -101,6 +101,18 @@ So, **to use electron's Wayland rendering** edit `/usr/share/applciations/google
 
 See full [CHANGELOG](./CHANGELOG.md).
 
+### 5.27.23-1
+
+Add support for several iconThemes, to match some 'monochrome' desktop themes. 3 values are supported : 
+
+* `default` : the good old green ones
+* `colored` : the new colored google ones
+* `mono` : an attempt at monochrome icon theme
+
+Edit `~/.config/google-hangouts-chat-linux.json` and set `"iconTheme":"colored"` for instance, then **restart**.
+
+No GUI setting for now.
+
 ### 5.27.22-4
 
 Fix systray notification (favicon name changed on google side) see https://github.com/squalou/google-chat-linux/issues/87
diff --git a/assets/icon/badge-256.png b/assets/icon/badge-256.png
deleted file mode 100644
index d3cbb52..0000000
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diff --git a/assets/icon/badge-48.png b/assets/icon/badge-48.png
deleted file mode 100644
index 2c88774..0000000
Binary files a/assets/icon/badge-48.png and /dev/null differ
diff --git a/assets/icon/colored/badge-64.png b/assets/icon/colored/badge-64.png
new file mode 100644
index 0000000..5a239e4
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diff --git a/assets/icon/colored/normal-64.png b/assets/icon/colored/normal-64.png
new file mode 100644
index 0000000..b57639c
Binary files /dev/null and b/assets/icon/colored/normal-64.png differ
diff --git a/assets/icon/colored/offline-64.png b/assets/icon/colored/offline-64.png
new file mode 100644
index 0000000..a29f8c0
Binary files /dev/null and b/assets/icon/colored/offline-64.png differ
diff --git a/assets/icon/badge-64.png b/assets/icon/default/badge-64.png
similarity index 100%
rename from assets/icon/badge-64.png
rename to assets/icon/default/badge-64.png
diff --git a/assets/icon/normal-64.png b/assets/icon/default/normal-64.png
similarity index 100%
rename from assets/icon/normal-64.png
rename to assets/icon/default/normal-64.png
diff --git a/assets/icon/offline-64.png b/assets/icon/default/offline-64.png
similarity index 100%
rename from assets/icon/offline-64.png
rename to assets/icon/default/offline-64.png
diff --git a/assets/icon/mono/badge-64.png b/assets/icon/mono/badge-64.png
new file mode 100644
index 0000000..c9c6143
Binary files /dev/null and b/assets/icon/mono/badge-64.png differ
diff --git a/assets/icon/mono/normal-64.png b/assets/icon/mono/normal-64.png
new file mode 100644
index 0000000..f6d3033
Binary files /dev/null and b/assets/icon/mono/normal-64.png differ
diff --git a/assets/icon/mono/offline-64.png b/assets/icon/mono/offline-64.png
new file mode 100644
index 0000000..f1e5fa1
Binary files /dev/null and b/assets/icon/mono/offline-64.png differ
diff --git a/assets/icon/normal-256.png b/assets/icon/normal-256.png
deleted file mode 100644
index 68bf547..0000000
Binary files a/assets/icon/normal-256.png and /dev/null differ
diff --git a/assets/icon/normal-48.png b/assets/icon/normal-48.png
deleted file mode 100644
index 06738d7..0000000
Binary files a/assets/icon/normal-48.png and /dev/null differ
diff --git a/assets/icon/offline-256.png b/assets/icon/offline-256.png
deleted file mode 100644
index 9a383b9..0000000
Binary files a/assets/icon/offline-256.png and /dev/null differ
diff --git a/assets/icon/offline-48.png b/assets/icon/offline-48.png
deleted file mode 100644
index 15f8b64..0000000
Binary files a/assets/icon/offline-48.png and /dev/null differ
diff --git a/package-lock.json b/package-lock.json
index a3f466b..de51db5 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "google-chat-linux",
-  "version": "5.27.22-4",
+  "version": "5.27.23-1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "google-chat-linux",
-      "version": "5.27.22-4",
+      "version": "5.27.23-1",
       "license": "WTFPL",
       "dependencies": {
         "electron-context-menu": "^3.5.0"
diff --git a/package.json b/package.json
index 88ca4ec..e2d9c5b 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "google-chat-linux",
-  "version": "5.27.22-4",
+  "version": "5.27.23-1",
   "description": "Unofficial alternative Google Chat desktop app",
   "main": "src/index.js",
   "scripts": {
diff --git a/src/configs.js b/src/configs.js
index fadbc71..91564d9 100644
--- a/src/configs.js
+++ b/src/configs.js
@@ -14,6 +14,8 @@ const setConfigDefaults = (configuration) => {
     configuration.thirdPartyAuthLoginMode = configuration.thirdPartyAuthLoginMode === undefined ? false : configuration.thirdPartyAuthLoginMode;
     configuration.useOldUrl = configuration.useOldUrl === undefined ? false : configuration.useOldUrl;
     configuration.languages = configuration.languages === undefined ? undefined : configuration.languages;
+    configuration.iconTheme = configuration.iconTheme === undefined ? 'default' : configuration.iconTheme;
+    pathsManifest.setIconTheme(configuration.iconTheme)
     if (process.platform === 'win32') {
         configuration.keepMinimized = true;
     }
diff --git a/src/paths.js b/src/paths.js
index 5d390fe..73d6318 100644
--- a/src/paths.js
+++ b/src/paths.js
@@ -1,9 +1,32 @@
 const path = require("path");
 const { app } = require("electron");
 
+let theme = 'default';
+const iconPathTemplate = `\`icon/\${theme}/\${iconName}\``;
+const evalIconPath = (theme, iconName) => {
+    return eval(iconPathTemplate);
+}
+
+const setIconTheme = (t) => {
+    theme = t;
+}
+
+
+const normal = () => {
+    return path.resolve(process.resourcesPath, evalIconPath(theme, "normal-64.png"))
+}
+const badge = () => {
+    return path.resolve(process.resourcesPath, evalIconPath(theme, "badge-64.png"))
+}
+const offline = () => {
+    return path.resolve(process.resourcesPath, evalIconPath(theme, "offline-64.png"))
+}
+
 module.exports = {
     "configsPath": path.resolve(app.getPath("appData"), "google-hangouts-chat-linux.json"),
-    "NORMAL": path.resolve(process.resourcesPath, "icon/normal-64.png"),
-    "BADGE": path.resolve(process.resourcesPath, "icon/badge-64.png"),
-    "OFFLINE": path.resolve(process.resourcesPath, "icon/offline-64.png")
+    "OVERLAY_NEW_NOTIF": path.resolve(process.resourcesPath, "icon/overlay-new-xs.png"),
+    normal: normal,
+    badge: badge,
+    offline: offline,
+    setIconTheme: setIconTheme
 }
diff --git a/src/tray.js b/src/tray.js
index 4165c17..515c088 100644
--- a/src/tray.js
+++ b/src/tray.js
@@ -60,7 +60,7 @@ const initializeTray = (windowObj) => {
     // -> moved things to ipcRenderer preload mechanism in faviconChange.js - thank you ankurk91 :-)
     // see https://github.com/ankurk91/google-chat-electron.git
     try {
-        systemTrayIcon = new Tray(pathsManifest.OFFLINE);
+        systemTrayIcon = new Tray(pathsManifest.offline());
     } catch (e) {
         console.log(e)
         console.log("set Tray icon failed !")
@@ -86,11 +86,11 @@ ipcMain.on('favicon-changed', (evt, href) => {
 
 function iconForType(iconType) {
     if (iconType == "NORMAL") {
-        return pathsManifest.NORMAL;
+        return pathsManifest.normal();
     } else if (iconType == "ATTENTION") {
-        return pathsManifest.BADGE;
+        return pathsManifest.badge();
     } else {
-        return pathsManifest.OFFLINE;
+        return pathsManifest.offline();
     }
 }
 
diff --git a/src/window.js b/src/window.js
index 61946ee..80beed8 100644
--- a/src/window.js
+++ b/src/window.js
@@ -215,7 +215,7 @@ const getBrowserWindowOptions = (config) => {
         },
         "show": false,
         "backgroundColor": "#262727",
-        "icon": pathsManifest.NORMAL,
+        "icon": pathsManifest.normal(),
     }
 }