diff --git a/apps.json b/apps.json
index b5929a56c..870c7b49f 100644
--- a/apps.json
+++ b/apps.json
@@ -3919,8 +3919,8 @@
     "id": "qmsched",
     "name": "Quiet Mode Schedule and Widget",
     "shortName": "Quiet Mode",
-    "version": "0.06",
-    "description": "Automatically turn Quiet Mode on or off at set times, and change LCD options while Quiet Mode is active.",
+    "version": "0.07",
+    "description": "Automatically turn Quiet Mode on or off at set times, change theme and LCD options while Quiet Mode is active.",
     "icon": "app.png",
     "screenshots": [{"url":"screenshot_b1_main.png"},{"url":"screenshot_b1_edit.png"},{"url":"screenshot_b1_lcd.png"},
                     {"url":"screenshot_b2_main.png"},{"url":"screenshot_b2_edit.png"},{"url":"screenshot_b2_lcd.png"}],
diff --git a/apps/qmsched/ChangeLog b/apps/qmsched/ChangeLog
index 35832a300..cc0050cdd 100644
--- a/apps/qmsched/ChangeLog
+++ b/apps/qmsched/ChangeLog
@@ -3,4 +3,5 @@
 0.03: Bangle.js 2 support
 0.04: Move Quiet Mode LCD options from global settings to this app
 0.05: Avoid immediately redrawing widgets on load
-0.06: Fix: don't try to redraw widget when widgets not loaded
\ No newline at end of file
+0.06: Fix: don't try to redraw widget when widgets not loaded
+0.07: Option to switch theme
diff --git a/apps/qmsched/README.md b/apps/qmsched/README.md
index 535ae56e4..660bda787 100644
--- a/apps/qmsched/README.md
+++ b/apps/qmsched/README.md
@@ -9,6 +9,11 @@ Automatically turn Quiet Mode on or off at set times, and display a widget when
 | ![Edit Schedule menu](screenshot_b1_edit.png) | ![Edit Schedule menu](screenshot_b2_edit.png) |
 |  ![LCD Options menu](screenshot_b1_lcd.png)   |  ![LCD Options menu](screenshot_b2_lcd.png)   |
 
+### Switch Theme:
+
+Switch to dark theme during Quiet Mode.
+ * **NOTE**: This switches between the default "Dark BW" and "Light BW" themes, so custom theme settings will be lost.
+
 ### LCD Settings:
 
 If set, these override the default LCD settings while Quiet Mode is active.
\ No newline at end of file
diff --git a/apps/qmsched/app.js b/apps/qmsched/app.js
index 7be3339fb..433dab409 100644
--- a/apps/qmsched/app.js
+++ b/apps/qmsched/app.js
@@ -3,7 +3,7 @@ Bangle.drawWidgets();
 
 const modeNames = ["Off", "Alarms", "Silent"];
 
-// load global brightness setting
+// load global settings
 let bSettings = require('Storage').readJSON('setting.json',true)||{};
 let current = 0|bSettings.quiet;
 delete bSettings; // we don't need any other global settings
@@ -18,6 +18,7 @@ delete bSettings; // we don't need any other global settings
  */
 function save() {
   require('Storage').writeJSON('qmsched.json', settings);
+  eval(require('Storage').read('qmsched.boot.js')); // apply new schedules right away
 }
 function get(key, def) {
   return (key in settings) ? settings[key] : def;
@@ -77,37 +78,66 @@ function formatTime(t) {
   const mins = Math.round((t-hrs)*60);
   return (" "+hrs).substr(-2)+":"+("0"+mins).substr(-2);
 }
+/**
+ * Apply theme
+ */
+function applyTheme() {
+  const theme = (require("Storage").readJSON("setting.json", 1) || {}).theme;
+  if (theme && theme.dark===g.theme.dark) return; // already correct
+  g.theme = theme;
+  delete g.reset;
+  g._reset = g.reset;
+  g.reset = function(n) { return g._reset().setColor(g.theme.fg).setBgColor(g.theme.bg); };
+  g.clear = function(n) { if (n) g.reset(); return g.clearRect(0,0,g.getWidth(),g.getHeight()); };
+  g.clear(1);
+  Bangle.drawWidgets();
+  delete m.lastIdx; // force redraw
+  m.draw();
+}
 
+/**
+ * Library uses this to make the app update itself
+ * @param {int} mode New Quite Mode
+ */
+function setAppMode(mode) {
+  if (mode === current) return;
+  current = mode;
+  delete m.lastIdx; // force redraw
+  applyTheme();
+  if (m.lastIdx===undefined) m.draw(); // applyTheme didn't redraw menu, but we need to show updated mode
+}
+
+let m;
 function showMainMenu() {
-  let _m, menu = {
+  let menu = {
     "": {"title": "Quiet Mode"},
     "< Exit": () => load()
   };
   // "Current Mode""Silent" won't fit on Bangle.js 2
   menu["Current"+((process.env.HWVERSION===2) ? "" : " Mode")] = {
     value: current,
-    format: v => modeNames[v],
-    onchange: function(v) {
-      if (v<0) {v = 2;}
-      if (v>2) {v = 0;}
-      require("qmsched").setMode(v);
-      current = v;
-      this.value = v;
-    },
+    min:0, max:2, wrap: true,
+    format: () => modeNames[current],
+    onchange: require("qmsched").setMode, // library calls setAppMode(), which updates `current`
   };
   scheds.sort((a, b) => (a.hr-b.hr));
   scheds.forEach((sched, idx) => {
     menu[formatTime(sched.hr)] = {
       format: () => modeNames[sched.mode], // abuse format to right-align text
-      onchange: function() {
-        _m.draw = ()=> {}; // prevent redraw of main menu over edit menu
+      onchange: () => {
+        m.draw = ()=> {}; // prevent redraw of main menu over edit menu (needed because we abuse format/onchange)
         showEditMenu(idx);
       }
     };
   });
   menu["Add Schedule"] = () => showEditMenu(-1);
+  menu["Switch Theme"] = {
+    value: !!get("switchTheme"),
+    format: v => v ? /*LANG*/"Yes" : /*LANG*/"No",
+    onchange: v => v ? set("switchTheme", v) : unset("switchTheme"),
+  };
   menu["LCD Settings"] = () => showOptionsMenu();
-  _m = E.showMenu(menu);
+  m = E.showMenu(menu);
 }
 
 function showEditMenu(index) {
@@ -174,7 +204,7 @@ function showEditMenu(index) {
       showMainMenu();
     };
   }
-  return E.showMenu(menu);
+  m = E.showMenu(menu);
 }
 
 function showOptionsMenu() {
@@ -244,7 +274,7 @@ function showOptionsMenu() {
       onchange: () => {toggle("wakeOnTwist");},
     },
   };
-  return E.showMenu(oMenu);
+  m = E.showMenu(oMenu);
 }
 
 loadSettings();
diff --git a/apps/qmsched/boot.js b/apps/qmsched/boot.js
index c3bc49b58..c4610ce3e 100644
--- a/apps/qmsched/boot.js
+++ b/apps/qmsched/boot.js
@@ -1,5 +1,7 @@
 // apply Quiet Mode schedules
 (function qm() {
+  if (Bangle.qmTimeout) clearTimeout(Bangle.qmTimeout); // so the app can eval() this file to apply changes right away
+  delete Bangle.qmTimeout;
   let bSettings = require('Storage').readJSON('setting.json',true)||{};
   const curr = 0|bSettings.quiet;
   delete bSettings;
@@ -18,7 +20,7 @@
   let t = 3600000*(next.hr-hr); // timeout in milliseconds
   if (t<0) {t += 86400000;} // scheduled for tomorrow: add a day
   /* update quiet mode at the correct time. */
-  setTimeout(() => {
+  Bangle.qmTimeout=setTimeout(() => {
     require("qmsched").setMode(mode);
     qm(); // schedule next update
   }, t);
diff --git a/apps/qmsched/lib.js b/apps/qmsched/lib.js
index e9ed3ec90..e048d15bf 100644
--- a/apps/qmsched/lib.js
+++ b/apps/qmsched/lib.js
@@ -1,5 +1,37 @@
 /**
- * Apply LCD options for given mode
+ * Apply appropriate theme for given mode
+ * @param {int} mode Quiet Mode
+ */
+function switchTheme(mode) {
+  if (!!mode === g.theme.dark) return; // nothing to do
+  let s = require("Storage").readJSON("setting.json", 1) || {};
+  // default themes, copied from settings.js:showThemeMenu()
+  function cl(x) { return g.setColor(x).getColor(); }
+  s.theme = mode ? {
+    // 'Dark BW'
+    fg: cl("#fff"), bg: cl("#000"),
+    fg2: cl("#0ff"), bg2: cl("#000"),
+    fgH: cl("#fff"), bgH: cl("#00f"),
+    dark: true
+  } : {
+    // 'Light BW'
+    fg: cl("#000"), bg: cl("#fff"),
+    fg2: cl("#000"), bg2: cl("#cff"),
+    fgH: cl("#000"), bgH: cl("#0ff"),
+    dark: false
+  };
+  require("Storage").writeJSON("setting.json", s);
+  if (typeof __FILE__ === 'string') { // undefined means it loaded the default clock
+    const info = require("Storage").readJSON(__FILE__.split(".")[0]+".info", 1);
+    if (info && info.type!=="clock") { // info can have no type (but then it isn't a clock)
+      return; // not a clock: wait for user to switch apps
+    }
+  }
+  // current app is a clock: reload it with new theme
+  load(global.__FILE__);
+}
+/**
+ * Apply LCD options and theme for given mode
  * @param {int} mode Quiet Mode
  */
 exports.applyOptions = function(mode) {
@@ -8,6 +40,7 @@ exports.applyOptions = function(mode) {
   Bangle.setOptions(get("options", {}));
   Bangle.setLCDBrightness(get("brightness", 1));
   Bangle.setLCDTimeout(get("timeout", 10));
+  if ((require("Storage").readJSON("qmsched.json", 1) || {}).switchTheme) switchTheme(mode);
 };
 /**
  * Set new Quiet Mode and apply Bangle options
@@ -20,4 +53,5 @@ exports.setMode = function(mode) {
   ));
   exports.applyOptions(mode);
   if (typeof WIDGETS === "object" && "qmsched" in WIDGETS) WIDGETS["qmsched"].draw();
+  if (global.__FILE__ === "qmsched.app.js") setAppMode(mode);
 };
diff --git a/apps/qmsched/widget.js b/apps/qmsched/widget.js
index b25192b06..daa11ac71 100644
--- a/apps/qmsched/widget.js
+++ b/apps/qmsched/widget.js
@@ -18,7 +18,7 @@
         return; // drawWidgets will call draw again
       }
       let x = this.x, y = this.y;
-      g.clearRect(x, y, x+23, y+23);
+      g.reset().clearRect(x, y, x+23, y+23);
       // quiet mode: draw red one-way-street sign (dim red on Bangle.js 1)
       x = this.x+11;y = this.y+11; // center of widget
       g.setColor(process.env.HWVERSION===2 ? 1 : 0.8, 0, 0).fillCircle(x, y, 8);