diff --git a/services/web/app/src/infrastructure/ExpressLocals.js b/services/web/app/src/infrastructure/ExpressLocals.js
index 5ba7760c0e..1a4ebe9875 100644
--- a/services/web/app/src/infrastructure/ExpressLocals.js
+++ b/services/web/app/src/infrastructure/ExpressLocals.js
@@ -317,22 +317,6 @@ module.exports = function(webRouter, privateApiRouter, publicApiRouter) {
     next()
   })
 
-  webRouter.use(function(req, res, next) {
-    res.locals.uiConfig = {
-      defaultResizerSizeOpen: 7,
-      defaultResizerSizeClosed: 7,
-      eastResizerCursor: 'ew-resize',
-      westResizerCursor: 'ew-resize',
-      chatResizerSizeOpen: 7,
-      chatResizerSizeClosed: 0,
-      chatMessageBorderSaturation: '85%',
-      chatMessageBorderLightness: '40%',
-      chatMessageBgSaturation: '85%',
-      chatMessageBgLightness: '40%'
-    }
-    next()
-  })
-
   webRouter.use(function(req, res, next) {
     // TODO
     if (Settings.overleaf != null) {
diff --git a/services/web/app/views/project/editor.pug b/services/web/app/views/project/editor.pug
index 0034ec8369..834a6a4fc3 100644
--- a/services/web/app/views/project/editor.pug
+++ b/services/web/app/views/project/editor.pug
@@ -194,7 +194,6 @@ block content
 		window.aceBasePath = "/js/#{lib('ace')}"
 		//- Set path for PDFjs CMaps
 		window.pdfCMapsPath = "/js/cmaps/"
-		window.uiConfig = JSON.parse('!{StringHelper.stringifyJsonForScript(uiConfig)}');
 		//- enable doc hash checking for all projects
 		//- used in public/js/libs/sharejs.js
 		window.useShareJsHash = true
diff --git a/services/web/frontend/js/features/chat/components/message.js b/services/web/frontend/js/features/chat/components/message.js
index c9cd2f2b05..c2f0e1b320 100644
--- a/services/web/frontend/js/features/chat/components/message.js
+++ b/services/web/frontend/js/features/chat/components/message.js
@@ -4,33 +4,20 @@ import ColorManager from '../../../ide/colors/ColorManager'
 import MessageContent from './message-content'
 
 function Message({ message, userId }) {
-  const {
-    chatMessageBorderSaturation,
-    chatMessageBorderLightness,
-    chatMessageBgSaturation,
-    chatMessageBgLightness
-  } = window.uiConfig
-
   function hue(user) {
     return user ? ColorManager.getHueForUserId(user.id) : 0
   }
 
   function getMessageStyle(user) {
     return {
-      borderColor: `hsl(${hue(
-        user
-      )}, ${chatMessageBorderSaturation}, ${chatMessageBorderLightness})`,
-      backgroundColor: `hsl(${hue(
-        user
-      )}, ${chatMessageBgSaturation}, ${chatMessageBgLightness})`
+      borderColor: `hsl(${hue(user)}, 85%, 40%)`,
+      backgroundColor: `hsl(${hue(user)}, 85%, 40%`
     }
   }
 
   function getArrowStyle(user) {
     return {
-      borderColor: `hsl(${hue(
-        user
-      )}, ${chatMessageBorderSaturation}, ${chatMessageBorderLightness})`
+      borderColor: `hsl(${hue(user)}, 85%, 40%)`
     }
   }
 
diff --git a/services/web/frontend/js/ide.js b/services/web/frontend/js/ide.js
index 5e0a267d2e..db7a8c7b1b 100644
--- a/services/web/frontend/js/ide.js
+++ b/services/web/frontend/js/ide.js
@@ -103,8 +103,8 @@ App.controller('IdeController', function(
     pdfWidth: 0,
     reviewPanelOpen: localStorage(`ui.reviewPanelOpen.${window.project_id}`),
     miniReviewPanelVisible: false,
-    chatResizerSizeOpen: window.uiConfig.chatResizerSizeOpen,
-    chatResizerSizeClosed: window.uiConfig.chatResizerSizeClosed
+    chatResizerSizeOpen: 7,
+    chatResizerSizeClosed: 7
   }
   $scope.user = window.user
 
diff --git a/services/web/frontend/js/ide/directives/layout.js b/services/web/frontend/js/ide/directives/layout.js
index becf1c3583..5a54d765bb 100644
--- a/services/web/frontend/js/ide/directives/layout.js
+++ b/services/web/frontend/js/ide/directives/layout.js
@@ -35,13 +35,13 @@ export default App.directive('layout', ($parse, $compile, ide) => ({
         if (attrs.spacingOpen != null) {
           spacingOpen = parseInt(attrs.spacingOpen, 10)
         } else {
-          spacingOpen = window.uiConfig.defaultResizerSizeOpen
+          spacingOpen = 7
         }
 
         if (attrs.spacingClosed != null) {
           spacingClosed = parseInt(attrs.spacingClosed, 10)
         } else {
-          spacingClosed = window.uiConfig.defaultResizerSizeClosed
+          spacingClosed = 7
         }
 
         const options = {
@@ -93,13 +93,8 @@ export default App.directive('layout', ($parse, $compile, ide) => ({
           }
         }
 
-        if (window.uiConfig.eastResizerCursor != null) {
-          options.east.resizerCursor = window.uiConfig.eastResizerCursor
-        }
-
-        if (window.uiConfig.westResizerCursor != null) {
-          options.west.resizerCursor = window.uiConfig.westResizerCursor
-        }
+        options.east.resizerCursor = 'ew-resize'
+        options.west.resizerCursor = 'ew-resize'
 
         const repositionControls = function() {
           state = element.layout().readState()
diff --git a/services/web/frontend/stories/chat.stories.js b/services/web/frontend/stories/chat.stories.js
index 272d9eb591..6898814d1c 100644
--- a/services/web/frontend/stories/chat.stories.js
+++ b/services/web/frontend/stories/chat.stories.js
@@ -4,10 +4,7 @@ import { v4 as uuid } from 'uuid'
 
 import { ContextRoot } from '../js/shared/context/root-context'
 import ChatPane from '../js/features/chat/components/chat-pane'
-import {
-  stubUIConfig,
-  stubMathJax
-} from '../../test/frontend/features/chat/components/stubs'
+import { stubMathJax } from '../../test/frontend/features/chat/components/stubs'
 import { setupContext } from './fixtures/context'
 
 const ONE_MINUTE = 60 * 1000
@@ -43,7 +40,6 @@ function generateMessages(count) {
   return messages
 }
 
-stubUIConfig()
 stubMathJax()
 setupContext()
 
diff --git a/services/web/test/frontend/features/chat/components/chat-pane.test.js b/services/web/test/frontend/features/chat/components/chat-pane.test.js
index d66ac00ebe..7daaa6cd1d 100644
--- a/services/web/test/frontend/features/chat/components/chat-pane.test.js
+++ b/services/web/test/frontend/features/chat/components/chat-pane.test.js
@@ -8,12 +8,7 @@ import {
   renderWithChatContext,
   cleanUpContext
 } from '../../../helpers/render-with-context'
-import {
-  stubMathJax,
-  stubUIConfig,
-  tearDownMathJaxStubs,
-  tearDownUIConfigStubs
-} from './stubs'
+import { stubMathJax, tearDownMathJaxStubs } from './stubs'
 
 describe('<ChatPane />', function() {
   const user = {
@@ -41,12 +36,10 @@ describe('<ChatPane />', function() {
     fetchMock.reset()
     cleanUpContext()
 
-    stubUIConfig()
     stubMathJax()
   })
 
   afterEach(function() {
-    tearDownUIConfigStubs()
     tearDownMathJaxStubs()
   })
 
diff --git a/services/web/test/frontend/features/chat/components/message-list.test.js b/services/web/test/frontend/features/chat/components/message-list.test.js
index a73adab450..ccbe9e0d96 100644
--- a/services/web/test/frontend/features/chat/components/message-list.test.js
+++ b/services/web/test/frontend/features/chat/components/message-list.test.js
@@ -4,12 +4,7 @@ import { expect } from 'chai'
 import { screen, render, fireEvent } from '@testing-library/react'
 
 import MessageList from '../../../../../frontend/js/features/chat/components/message-list'
-import {
-  stubMathJax,
-  stubUIConfig,
-  tearDownMathJaxStubs,
-  tearDownUIConfigStubs
-} from './stubs'
+import { stubMathJax, tearDownMathJaxStubs } from './stubs'
 
 describe('<MessageList />', function() {
   const currentUser = {
@@ -36,12 +31,10 @@ describe('<MessageList />', function() {
   }
 
   before(function() {
-    stubUIConfig()
     stubMathJax()
   })
 
   after(function() {
-    tearDownUIConfigStubs()
     tearDownMathJaxStubs()
   })
 
diff --git a/services/web/test/frontend/features/chat/components/message.test.js b/services/web/test/frontend/features/chat/components/message.test.js
index c6a07ddcf4..41e5c1314e 100644
--- a/services/web/test/frontend/features/chat/components/message.test.js
+++ b/services/web/test/frontend/features/chat/components/message.test.js
@@ -3,12 +3,7 @@ import React from 'react'
 import { render, screen } from '@testing-library/react'
 
 import Message from '../../../../../frontend/js/features/chat/components/message'
-import {
-  stubMathJax,
-  stubUIConfig,
-  tearDownMathJaxStubs,
-  tearDownUIConfigStubs
-} from './stubs'
+import { stubMathJax, tearDownMathJaxStubs } from './stubs'
 
 describe('<Message />', function() {
   const currentUser = {
@@ -19,13 +14,11 @@ describe('<Message />', function() {
 
   beforeEach(function() {
     window.user = currentUser
-    stubUIConfig()
     stubMathJax()
   })
 
   afterEach(function() {
     delete window.user
-    tearDownUIConfigStubs()
     tearDownMathJaxStubs()
   })
 
diff --git a/services/web/test/frontend/features/chat/components/stubs.js b/services/web/test/frontend/features/chat/components/stubs.js
index 7fe5af41f9..2a52159225 100644
--- a/services/web/test/frontend/features/chat/components/stubs.js
+++ b/services/web/test/frontend/features/chat/components/stubs.js
@@ -1,18 +1,5 @@
 import sinon from 'sinon'
 
-export function stubUIConfig() {
-  window.uiConfig = {
-    chatMessageBorderSaturation: '85%',
-    chatMessageBorderLightness: '40%',
-    chatMessageBgSaturation: '85%',
-    chatMessageBgLightness: '40%'
-  }
-}
-
-export function tearDownUIConfigStubs() {
-  delete window.uiConfig
-}
-
 export function stubMathJax() {
   window.MathJax = {
     Hub: {