diff --git a/daemon.py b/daemon.py
index 842527b49..9b2a700a9 100644
--- a/daemon.py
+++ b/daemon.py
@@ -150,6 +150,7 @@ from media import removeMetaData
 from cache import storePersonInCache
 from cache import getPersonFromCache
 from httpsig import verifyPostHeaders
+from theme import setTheme
 import os
 import sys
 
@@ -3809,6 +3810,8 @@ class PubServer(BaseHTTPRequestHandler):
                             if fields['displayNickname']!=actorJson['name']:
                                 actorJson['name']=fields['displayNickname']
                                 actorChanged=True
+                        if fields.get('themeDropdown'):
+                            setTheme(self.server.baseDir,fields['themeDropdown'])
                         if fields.get('donateUrl'):
                             currentDonateUrl=getDonationUrl(actorJson)
                             if fields['donateUrl']!=currentDonateUrl:
diff --git a/translations/ar.json b/translations/ar.json
index ff5a13464..3bebcc779 100644
--- a/translations/ar.json
+++ b/translations/ar.json
@@ -180,5 +180,11 @@
     "Instance Logo": "Instance Logo",
     "Bookmark this post": "Bookmark this post",
     "Undo the bookmark": "Undo the bookmark",
-    "Bookmarks": "Saves"
+    "Bookmarks": "Saves",
+    "Theme": "Theme",
+    "Default": "Default",
+    "Light": "Light",
+    "Purple": "Purple",
+    "Hacker": "Hacker",
+    "HighVis": "HighVis"
 }
diff --git a/translations/ca.json b/translations/ca.json
index c27869bff..9dc9cc91d 100644
--- a/translations/ca.json
+++ b/translations/ca.json
@@ -180,5 +180,11 @@
     "Instance Logo": "Instance Logo",
     "Bookmark this post": "Bookmark this post",
     "Undo the bookmark": "Undo the bookmark",
-    "Bookmarks": "Saves"
+    "Bookmarks": "Saves",
+    "Theme": "Theme",
+    "Default": "Default",
+    "Light": "Light",
+    "Purple": "Purple",
+    "Hacker": "Hacker",
+    "HighVis": "HighVis"
 }
diff --git a/translations/cy.json b/translations/cy.json
index e8ac0f6d3..0b8192473 100644
--- a/translations/cy.json
+++ b/translations/cy.json
@@ -180,5 +180,11 @@
     "Instance Logo": "Instance Logo",
     "Bookmark this post": "Bookmark this post",
     "Undo the bookmark": "Undo the bookmark",
-    "Bookmarks": "Saves"
+    "Bookmarks": "Saves",
+    "Theme": "Theme",
+    "Default": "Default",
+    "Light": "Light",
+    "Purple": "Purple",
+    "Hacker": "Hacker",
+    "HighVis": "HighVis"
 }
diff --git a/translations/de.json b/translations/de.json
index e1c365797..15044e449 100644
--- a/translations/de.json
+++ b/translations/de.json
@@ -180,5 +180,11 @@
     "Instance Logo": "Instance Logo",
     "Bookmark this post": "Bookmark this post",
     "Undo the bookmark": "Undo the bookmark",
-    "Bookmarks": "Saves"
+    "Bookmarks": "Saves",
+    "Theme": "Theme",
+    "Default": "Default",
+    "Light": "Light",
+    "Purple": "Purple",
+    "Hacker": "Hacker",
+    "HighVis": "HighVis"
 }
diff --git a/translations/en.json b/translations/en.json
index 40d63aaac..c8841ba7b 100644
--- a/translations/en.json
+++ b/translations/en.json
@@ -180,5 +180,11 @@
     "Instance Logo": "Instance Logo",
     "Bookmark this post": "Bookmark this post",
     "Undo the bookmark": "Undo the bookmark",
-    "Bookmarks": "Saves"
+    "Bookmarks": "Saves",
+    "Theme": "Theme",
+    "Default": "Default",
+    "Light": "Light",
+    "Purple": "Purple",
+    "Hacker": "Hacker",
+    "HighVis": "HighVis"
 }
diff --git a/translations/es.json b/translations/es.json
index a33597507..070cdd8c5 100644
--- a/translations/es.json
+++ b/translations/es.json
@@ -180,5 +180,11 @@
     "Instance Logo": "Instance Logo",
     "Bookmark this post": "Bookmark this post",
     "Undo the bookmark": "Undo the bookmark",
-    "Bookmarks": "Saves"
+    "Bookmarks": "Saves",
+    "Theme": "Theme",
+    "Default": "Default",
+    "Light": "Light",
+    "Purple": "Purple",
+    "Hacker": "Hacker",
+    "HighVis": "HighVis"
 }
diff --git a/translations/fr.json b/translations/fr.json
index 2cad067e4..04a2244ee 100644
--- a/translations/fr.json
+++ b/translations/fr.json
@@ -180,5 +180,11 @@
     "Instance Logo": "Instance Logo",
     "Bookmark this post": "Bookmark this post",
     "Undo the bookmark": "Undo the bookmark",
-    "Bookmarks": "Saves"
+    "Bookmarks": "Saves",
+    "Theme": "Theme",
+    "Default": "Default",
+    "Light": "Light",
+    "Purple": "Purple",
+    "Hacker": "Hacker",
+    "HighVis": "HighVis"
 }
diff --git a/translations/ga.json b/translations/ga.json
index 793a6c5f2..f4a674910 100644
--- a/translations/ga.json
+++ b/translations/ga.json
@@ -180,5 +180,11 @@
     "Instance Logo": "Instance Logo",
     "Bookmark this post": "Bookmark this post",
     "Undo the bookmark": "Undo the bookmark",
-    "Bookmarks": "Saves"
+    "Bookmarks": "Saves",
+    "Theme": "Theme",
+    "Default": "Default",
+    "Light": "Light",
+    "Purple": "Purple",
+    "Hacker": "Hacker",
+    "HighVis": "HighVis"
 }
diff --git a/translations/hi.json b/translations/hi.json
index 7647a7c67..a67d4f8a6 100644
--- a/translations/hi.json
+++ b/translations/hi.json
@@ -180,5 +180,11 @@
     "Instance Logo": "Instance Logo",
     "Bookmark this post": "Bookmark this post",
     "Undo the bookmark": "Undo the bookmark",
-    "Bookmarks": "Saves"
+    "Bookmarks": "Saves",
+    "Theme": "Theme",
+    "Default": "Default",
+    "Light": "Light",
+    "Purple": "Purple",
+    "Hacker": "Hacker",
+    "HighVis": "HighVis"
 }
diff --git a/translations/it.json b/translations/it.json
index a64b54944..a9f72f8f9 100644
--- a/translations/it.json
+++ b/translations/it.json
@@ -180,5 +180,11 @@
     "Instance Logo": "Instance Logo",
     "Bookmark this post": "Bookmark this post",
     "Undo the bookmark": "Undo the bookmark",
-    "Bookmarks": "Saves"
+    "Bookmarks": "Saves",
+    "Theme": "Theme",
+    "Default": "Default",
+    "Light": "Light",
+    "Purple": "Purple",
+    "Hacker": "Hacker",
+    "HighVis": "HighVis"
 }
diff --git a/translations/ja.json b/translations/ja.json
index b859743c6..715d988ec 100644
--- a/translations/ja.json
+++ b/translations/ja.json
@@ -180,5 +180,11 @@
     "Instance Logo": "Instance Logo",
     "Bookmark this post": "Bookmark this post",
     "Undo the bookmark": "Undo the bookmark",
-    "Bookmarks": "Saves"
+    "Bookmarks": "Saves",
+    "Theme": "Theme",
+    "Default": "Default",
+    "Light": "Light",
+    "Purple": "Purple",
+    "Hacker": "Hacker",
+    "HighVis": "HighVis"
 }
diff --git a/translations/oc.json b/translations/oc.json
index 9469fb461..30b230389 100644
--- a/translations/oc.json
+++ b/translations/oc.json
@@ -176,5 +176,11 @@
     "Instance Logo": "Instance Logo",
     "Bookmark this post": "Bookmark this post",
     "Undo the bookmark": "Undo the bookmark",
-    "Bookmarks": "Saves"
+    "Bookmarks": "Saves",
+    "Theme": "Theme",
+    "Default": "Default",
+    "Light": "Light",
+    "Purple": "Purple",
+    "Hacker": "Hacker",
+    "HighVis": "HighVis"
 }
diff --git a/translations/pt.json b/translations/pt.json
index 148c77d96..17f308cb5 100644
--- a/translations/pt.json
+++ b/translations/pt.json
@@ -180,5 +180,11 @@
     "Instance Logo": "Instance Logo",
     "Bookmark this post": "Bookmark this post",
     "Undo the bookmark": "Undo the bookmark",
-    "Bookmarks": "Saves"
+    "Bookmarks": "Saves",
+    "Theme": "Theme",
+    "Default": "Default",
+    "Light": "Light",
+    "Purple": "Purple",
+    "Hacker": "Hacker",
+    "HighVis": "HighVis"
 }
diff --git a/translations/ru.json b/translations/ru.json
index 11b0e9cb6..c2c9dfb9c 100644
--- a/translations/ru.json
+++ b/translations/ru.json
@@ -180,5 +180,11 @@
     "Instance Logo": "Instance Logo",
     "Bookmark this post": "Bookmark this post",
     "Undo the bookmark": "Undo the bookmark",
-    "Bookmarks": "Saves"
+    "Bookmarks": "Saves",
+    "Theme": "Theme",
+    "Default": "Default",
+    "Light": "Light",
+    "Purple": "Purple",
+    "Hacker": "Hacker",
+    "HighVis": "HighVis"
 }
diff --git a/translations/zh.json b/translations/zh.json
index 45064e349..d73bafad7 100644
--- a/translations/zh.json
+++ b/translations/zh.json
@@ -180,5 +180,11 @@
     "Instance Logo": "Instance Logo",
     "Bookmark this post": "Bookmark this post",
     "Undo the bookmark": "Undo the bookmark",
-    "Bookmarks": "Saves"
+    "Bookmarks": "Saves",
+    "Theme": "Theme",
+    "Default": "Default",
+    "Light": "Light",
+    "Purple": "Purple",
+    "Hacker": "Hacker",
+    "HighVis": "HighVis"
 }
diff --git a/webinterface.py b/webinterface.py
index c6ec076be..6fdc8023b 100644
--- a/webinterface.py
+++ b/webinterface.py
@@ -593,6 +593,7 @@ def htmlEditProfile(translate: {},baseDir: str,path: str,domain: str,port: int)
 
     instanceStr=''
     moderatorsStr=''
+    themesDropdown=''
     adminNickname=getConfigParam(baseDir,'admin')
     if path.startswith('/users/'+adminNickname+'/'):
         instanceDescription=getConfigParam(baseDir,'instanceDescription')
@@ -620,7 +621,18 @@ def htmlEditProfile(translate: {},baseDir: str,path: str,domain: str,port: int)
         moderatorsStr+='  '+translate['A list of moderator nicknames. One per line.']
         moderatorsStr+='  <textarea id="message" name="moderators" placeholder="'+translate['List of moderator nicknames']+'..." style="height:200px">'+moderators+'</textarea>'
         moderatorsStr+='</div>'
-        
+
+        themesDropdown= '<div class="container">'
+        themesDropdown+='  <b>'+translate['Theme']+'</b><br>'
+        themesDropdown+='  <select id="themeDropdown" class="theme">'
+        themesDropdown+='    <option value="default">'+translate['Default']+'</option>'
+        themesDropdown+='    <option value="light">'+translate['Light']+'</option>'
+        themesDropdown+='    <option value="purple">'+translate['Purple']+'</option>'
+        themesDropdown+='    <option value="hacker">'+translate['Hacker']+'</option>'
+        themesDropdown+='    <option value="highvis">'+translate['HighVis']+'</option>'
+        themesDropdown+='  </select>'
+        themesDropdown+='</div>'
+
     editProfileForm=htmlHeader(cssFilename,editProfileCSS)
     editProfileForm+='<form enctype="multipart/form-data" method="POST" accept-charset="UTF-8" action="'+path+'/profiledata">'
     editProfileForm+='  <div class="vertical-center">'
@@ -671,7 +683,7 @@ def htmlEditProfile(translate: {},baseDir: str,path: str,domain: str,port: int)
     editProfileForm+='    <div class="container">'
     editProfileForm+='      <b>'+translate['Skills']+'</b><br>'
     editProfileForm+='      '+translate['If you want to participate within organizations then you can indicate some skills that you have and approximate proficiency levels. This helps organizers to construct teams with an appropriate combination of skills.']
-    editProfileForm+=skillsStr+moderatorsStr
+    editProfileForm+=skillsStr+themesDropdown+moderatorsStr
     editProfileForm+='    </div>'+instanceStr
     editProfileForm+='    <div class="container">'
     editProfileForm+='      <b>'+translate['Danger Zone']+'</b><br>'