diff --git a/client/less/main.less b/client/less/main.less
index 60320c5d6a..0bd7729021 100644
--- a/client/less/main.less
+++ b/client/less/main.less
@@ -64,7 +64,6 @@ body.top-and-bottom-margins {
 }
 
 body.no-top-and-bottom-margins {
-  display: none;
   margin: 75px 20px 0px 20px;
 }
 
diff --git a/client/main.js b/client/main.js
index 05fd4dc69f..1efdb3e0d6 100644
--- a/client/main.js
+++ b/client/main.js
@@ -165,6 +165,7 @@ main.setMapShare = function setMapShare(id) {
 
 $(document).ready(function() {
 
+  const { Observable } = window.Rx;
   var CSRF_HEADER = 'X-CSRF-Token';
 
   var setCSRFToken = function(securityToken) {
@@ -548,51 +549,68 @@ $(document).ready(function() {
   // keyboard shortcuts: open map
   window.Mousetrap.bind('g m', toggleMap);
 
-  // Night Mode
-  function changeMode() {
-    var newValue = false;
-    try {
-      newValue = !JSON.parse(localStorage.getItem('nightMode'));
-    } catch (e) {
-      console.error('Error parsing value form local storage:', 'nightMode', e);
-    }
-    localStorage.setItem('nightMode', String(newValue));
-    toggleNightMode(newValue);
+  function addAlert(message = '', type = 'alert-info') {
+    return $('.flashMessage').append($(`
+      <div class='alert ${type}'>
+        <button class='close' type='button', data-dismiss='alert'>
+          <span class='ion-close-circled' />
+        </Button>
+        <div>${message}</div>
+      </div>
+    `));
   }
 
-  function toggleNightMode(nightModeEnabled) {
-    var iframe = document.getElementById('map-aside-frame');
-    if (iframe) {
-      iframe.src = iframe.src;
+  function toggleNightMode() {
+    if (!main.userId) {
+      return addAlert('You must be logged in to use our themes.');
     }
-    var body = $('body');
-    body.hide();
-    if (nightModeEnabled) {
-      body.addClass('night');
+    const iframe$ = document.getElementById('map-aside-frame');
+    const body$ = $('body');
+    if (iframe$) {
+      iframe$.src = iframe$.src;
+    }
+    body$.hide();
+    let updateThemeTo;
+    if (body$.hasClass('night')) {
+      body$.removeClass('night');
+      updateThemeTo = 'default';
     } else {
-      body.removeClass('night');
+      body$.addClass('night');
+      updateThemeTo = 'night';
     }
-    body.fadeIn('100');
+    body$.fadeIn('100');
+    const options = {
+      url: `/api/users/${main.userId}/update-theme`,
+      type: 'POST',
+      data: { theme: updateThemeTo },
+      dataType: 'json'
+    };
+    return $.ajax(options)
+      .success(() => console.log('theme updated successfully'))
+      .fail(err => {
+        let message;
+        try {
+          message = JSON.parse(err.responseText).error.message;
+        } catch (error) {
+          return null;
+        }
+        if (!message) {
+          return null;
+        }
+        return addAlert(message);
+      });
   }
 
-  if (typeof localStorage.getItem('nightMode') !== 'undefined') {
-    var oldVal = false;
-    try {
-      oldVal = JSON.parse(localStorage.getItem('nightMode'));
-    } catch (e) {
-      console.error('Error parsing value form local storage:', 'nightMode', e);
-    }
-    toggleNightMode(oldVal);
-    $('.nightMode-btn').on('click', function() {
-      changeMode();
-    });
-  } else {
-    localStorage.setItem('nightMode', 'false');
-    toggleNightMode('false');
-  }
+  Observable.merge(
+    Observable.fromEvent($('#night-mode'), 'click'),
+    Observable.create(observer => {
+      window.Mousetrap.bind('g t n', () => observer.onNext());
+    })
+  )
+    .debounce(500)
+    .subscribe(toggleNightMode, err => console.error(err));
 
   // Hot Keys
-  window.Mousetrap.bind('g t n', changeMode);
   window.Mousetrap.bind('g n n', () => {
     // Next Challenge
     window.location = '/challenges/next-challenge';
diff --git a/common/models/user.js b/common/models/user.js
index a9584b4447..4d2def2304 100644
--- a/common/models/user.js
+++ b/common/models/user.js
@@ -486,6 +486,91 @@ module.exports = function(User) {
     }
   );
 
+  User.prototype.updateEmail = function updateEmail(email) {
+    if (this.email && this.email === email) {
+      return Promise.reject(new Error(
+        `${email} is already associated with this account.`
+      ));
+    }
+    return User.doesExist(null, email)
+      .then(exists => {
+        if (exists) {
+          return Promise.reject(
+            new Error(`${email} is already associated with another account.`)
+          );
+        }
+        return this.update$({ email }).toPromise();
+      });
+  };
+
+  User.remoteMethod(
+    'updateEmail',
+    {
+      isStatic: false,
+      description: 'updates the email of the user object',
+      accepts: [
+        {
+          arg: 'email',
+          type: 'string',
+          required: true
+        }
+      ],
+      returns: [
+        {
+          arg: 'status',
+          type: 'object'
+        }
+      ],
+      http: {
+        path: '/update-email',
+        verb: 'POST'
+      }
+    }
+  );
+
+  User.themes = {
+    night: true,
+    default: true
+  };
+  User.prototype.updateTheme = function updateTheme(theme) {
+    if (!this.constructor.themes[theme]) {
+      const err = new Error(
+        'Theme is not valid.'
+      );
+      err.messageType = 'info';
+      err.userMessage = err.message;
+      return Promise.reject(err);
+    }
+    return this.update$({ theme })
+      .map({ updatedTo: theme })
+      .toPromise();
+  };
+
+  User.remoteMethod(
+    'updateTheme',
+    {
+      isStatic: false,
+      description: 'updates the users chosen theme',
+      accepts: [
+        {
+          arg: 'theme',
+          type: 'string',
+          required: true
+        }
+      ],
+      returns: [
+        {
+          arg: 'status',
+          type: 'object'
+        }
+      ],
+      http: {
+        path: '/update-theme',
+        verb: 'POST'
+      }
+    }
+  );
+
   // user.updateTo$(updateData: Object) => Observable[Number]
   User.prototype.update$ = function update$(updateData) {
     const id = this.getId();
diff --git a/common/models/user.json b/common/models/user.json
index ad7294688d..cdbff24c58 100644
--- a/common/models/user.json
+++ b/common/models/user.json
@@ -188,6 +188,10 @@
     },
     "timezone": {
       "type": "string"
+    },
+    "theme": {
+      "type": "string",
+      "default": "default"
     }
   },
   "validations": [],
@@ -242,6 +246,13 @@
       "principalId": "$owner",
       "permission": "ALLOW",
       "property": "updateEmail"
+    },
+    {
+      "accessType": "EXECUTE",
+      "principalType": "ROLE",
+      "principalId": "$owner",
+      "permission": "ALLOW",
+      "property": "updateTheme"
     }
   ],
   "methods": []
diff --git a/server/middlewares/global-locals.js b/server/middlewares/global-locals.js
index 1871eb95ff..aa2d7e32d0 100644
--- a/server/middlewares/global-locals.js
+++ b/server/middlewares/global-locals.js
@@ -6,6 +6,10 @@ export default function globalLocals() {
     if (req.csrfToken) {
       res.expose({ token: res.locals._csrf }, 'csrf');
     }
+    res.locals.theme = req.user && req.user.theme ||
+      req.cookies.theme ||
+      'default';
+
     next();
   };
 }
diff --git a/server/utils/middleware.js b/server/utils/middleware.js
index 1e5243f5da..458168bac3 100644
--- a/server/utils/middleware.js
+++ b/server/utils/middleware.js
@@ -6,7 +6,7 @@ export function ifNoUserRedirectTo(url, message, type = 'errors') {
     }
 
     req.flash(type, {
-      msg: message || `You must be signed to go to ${path}`
+      msg: message || `You must be signed in to access ${path}`
     });
 
     return res.redirect(url);
diff --git a/server/views/account/settings.jade b/server/views/account/settings.jade
index c992ece48e..e904dbc413 100644
--- a/server/views/account/settings.jade
+++ b/server/views/account/settings.jade
@@ -5,7 +5,7 @@ block content
         h2.text-center Actions
         .row
           .col-xs-12
-            a.btn.btn-lg.btn-block.btn-primary.btn-link-social(class = "nightMode-btn") Night Mode
+            a#night-mode.btn.btn-lg.btn-block.btn-primary.btn-link-social Night Mode
         .row
           .col-xs-12
               if (!user.isGithubCool)
@@ -133,4 +133,4 @@ block content
                           form(action='/account/delete', method='POST')
                               input(type='hidden', name='_csrf', value=_csrf)
                               button.btn.btn-danger.btn-block(type='submit')
-                                  | I am 100% sure I want to delete my account and all of my progress
\ No newline at end of file
+                                  | I am 100% sure I want to delete my account and all of my progress
diff --git a/server/views/layout-wide.jade b/server/views/layout-wide.jade
index 4ffc168436..cf548c3edc 100644
--- a/server/views/layout-wide.jade
+++ b/server/views/layout-wide.jade
@@ -8,9 +8,9 @@ html(lang='en')
           include partials/scripts
           block content
   else
-      body.no-top-and-bottom-margins
-        include partials/scripts
-        include partials/navbar
-        include partials/flash
-        block content
-        include partials/footer
+      body.no-top-and-bottom-margins(class=theme !== 'default' ? theme : '')
+          include partials/scripts
+          include partials/navbar
+          include partials/flash
+          block content
+          include partials/footer
diff --git a/server/views/map/show.jade b/server/views/map/show.jade
index 896032cbad..cf42fab570 100644
--- a/server/views/map/show.jade
+++ b/server/views/map/show.jade
@@ -1,6 +1,6 @@
 extends ../layout-wide
 block content
-      .mapWrapper
+    .mapWrapper
         .text-center.map-fixed-header
             p Challenges required for certifications are marked with a *
             .row.map-buttons
@@ -9,7 +9,7 @@ block content
                 .input-group
                     input#map-filter.form-control(type="text" placeholder="Type a challenge name" autocomplete="off" value="")
                     span.input-group-addon
-                       i.fa.fa-search
+                        i.fa.fa-search
             hr
             include ../partials/flash
         #accordion.map-accordion
@@ -122,3 +122,4 @@ block content
                         p.challenge-title.disabled.text-primary.ion-locked.padded-ionic-icon.negative-15(name="Mock Interview #2") Mock Interview #2
                         p.challenge-title.disabled.text-primary.ion-locked.padded-ionic-icon.negative-15(name="Mock Interview #3") Mock Interview #3
           .spacer
+        include ../partials/flash
diff --git a/server/views/partials/flash.jade b/server/views/partials/flash.jade
index 8668a4174d..8b9fa3e431 100644
--- a/server/views/partials/flash.jade
+++ b/server/views/partials/flash.jade
@@ -1,6 +1,6 @@
 .container
     .row.flashMessage.negative-30
-        .col-xs-12
+        .col-xs-12.col-sm-8.col-sm-offset-2.col-md-6.col-md-offset-3
             if (messages.errors || messages.error)
               .alert.alert-danger.fade.in
                 button.close(type='button', data-dismiss='alert')
diff --git a/server/views/partials/scripts.jade b/server/views/partials/scripts.jade
index a002f935eb..988b26bd9f 100644
--- a/server/views/partials/scripts.jade
+++ b/server/views/partials/scripts.jade
@@ -7,5 +7,11 @@ script.
     ga('require', 'displayfeatures');
     ga('send', 'pageview');
 // Leave the below lines alone!
+script.
+  (function(global) {
+    global.main = global.main || {};
+    global.main.isLoggedIn = !{JSON.stringify(!!user)};
+    global.main.userId = !{JSON.stringify(user && user.id || false)};
+  }(window))
 script(src=rev('/js', 'vendor-main.js'))
 script(src=rev('/js', 'main.js'))