diff --git a/application/palemoon/themes/windows/browser.css b/application/palemoon/themes/windows/browser.css
index 8f485eb53..16b548607 100644
--- a/application/palemoon/themes/windows/browser.css
+++ b/application/palemoon/themes/windows/browser.css
@@ -3043,96 +3043,6 @@ toolbar[brighttext] #addonbar-closebutton {
   }
 }
 
-@media (-moz-windows-default-theme) {
-  #navigator-toolbox > toolbar:not(:-moz-lwtheme),
-  #browser-bottombox:not(:-moz-lwtheme) {
-    background-color: var(--toolbar-custom-color);
-  }
-
-  .tabbrowser-tab:not(:-moz-lwtheme),
-  .tabs-newtab-button:not(:-moz-lwtheme) {
-    background-image: @toolbarShadowOnTab@, var(--tab-background),
-                      linear-gradient(var(--toolbar-custom-color), var(--toolbar-custom-color));
-  }
-
-  .tabbrowser-tab:not(:-moz-lwtheme):hover,
-  .tabs-newtab-button:not(:-moz-lwtheme):hover {
-    background-image: @toolbarShadowOnTab@, var(--tab-background-hover),
-                      linear-gradient(var(--toolbar-custom-color), var(--toolbar-custom-color));
-  }
-
-  .tabbrowser-tab[selected="true"]:not(:-moz-lwtheme) {
-    background-image: linear-gradient(#fff, var(--toolbar-highlight-top) 50%),
-                      linear-gradient(var(--toolbar-custom-color), var(--toolbar-custom-color));
-  }
-
-  #main-window[tabsontop=false]:not([disablechrome]) .tabbrowser-tab[selected=true]:not(:-moz-lwtheme) {
-    background-image: @toolbarShadowOnTab@,
-                      linear-gradient(#fff, var(--toolbar-highlight-top) 50%),
-                      linear-gradient(var(--toolbar-custom-color), var(--toolbar-custom-color));
-  }
-  
-  @media (-moz-os-version: windows-vista),
-         (-moz-os-version: windows-win7) {
-    :root:not(:-moz-lwtheme) {
-      --toolbox-after-color: #aabccf;
-    }
-  }
-
-  @media (-moz-os-version: windows-win8),
-         (-moz-os-version: windows-win10) {
-    :root {
-      --toolbar-custom-color: hsl(210,0%,92%);
-    }
-    
-    :root:not(:-moz-lwtheme) {
-      --toolbox-after-color: #bcbcbc;
-    }
-  }
- 
-  #navigator-toolbox[tabsontop=true] #urlbar:not(:-moz-lwtheme),
-  #navigator-toolbox[tabsontop=true] .searchbar-textbox:not(:-moz-lwtheme) {
-    border-color: hsla(210,54%,20%,.25) hsla(210,54%,20%,.27) hsla(210,54%,20%,.3);
-  }
-
-  #navigator-toolbox[tabsontop=true] #urlbar:not(:-moz-lwtheme):not([focused]):hover,
-  #navigator-toolbox[tabsontop=true] .searchbar-textbox:not(:-moz-lwtheme):not([focused]):hover {
-    border-color: hsla(210,54%,20%,.35) hsla(210,54%,20%,.37) hsla(210,54%,20%,.4);
-  }
-
-  #navigator-toolbox[tabsontop=true] #urlbar:not(:-moz-lwtheme)[focused],
-  #navigator-toolbox[tabsontop=true] .searchbar-textbox:not(:-moz-lwtheme)[focused] {
-    border-color: hsla(206,100%,60%,.65) hsla(206,100%,55%,.65) hsla(206,100%,50%,.65);
-  }
-
-  .sidebar-splitter {
-    border: 0;
-    -moz-border-end: 1px solid #A9B7C9;
-    min-width: 0;
-    width: 3px;
-    background-color: transparent;
-    -moz-margin-start: -3px;
-    position: relative;
-  }
-
-  #appcontent ~ .sidebar-splitter {
-    -moz-border-start: 1px solid #A9B7C9;
-    -moz-border-end: none;
-    -moz-margin-start: 0;
-    -moz-margin-end: -3px;
-  }
-
-  .menu-accel,
-  .menu-iconic-accel {
-    color: graytext;
-  }
-
-  .chatbar-button,
-  chatbar > chatbox {
-    border-color: #A9B7C9;
-  } 
-}
-
 @media (-moz-windows-compositor) {
   #main-window {
     background-color: transparent;