diff --git a/userContent.css b/userContent.css
index 7a4241d..c879bc7 100644
--- a/userContent.css
+++ b/userContent.css
@@ -1262,7 +1262,141 @@
 /*= chrome://browser/content/places/places.xhtml =============================*/
 @-moz-document url("chrome://browser/content/places/places.xhtml")
 {
+  /** Library - Icons Replace *************************************************/
+  /*= Standard Folder - More Visible =========================================*/
+  /* on Toolbar and Menus */
+  :-moz-any(#PlacesToolbar, #BMB_bookmarksPopup, #bookmarksMenu) .bookmark-item[container="true"]:not([query="true"], [tagContainer], [dayContainer]),
+  /* in Sidebar, Library, Add/Edit Bookmark dialog */
+  /* https://github.com/rillian/firefox/blob/1f88437d263f56bdede4f20f69ba9c7b62f57001/layout/style/nsCSSAnonBoxList.h#L85-L98 */
+  /* Need to overide!!, can not use :not() */
+  :-moz-any(#bookmarks-view, #historyTree, #editBMPanel_folderTree, #placesList, #placeContent) treechildren::-moz-tree-image(title, container),
+  #editBMPanel_folderMenuList:not([selectedGuid="toolbar_____"], [selectedGuid="menu________"]),
+  #editBMPanel_folderMenuList .folder-icon:not([id]),
+  /* Download Popup */
+  .downloadIconShow > .button-box > .button-icon {
+    list-style-image: url("./icons/folder.svg") !important;
+  }
+
+  /* Standard Folder - Open */
+  :-moz-any(#PlacesToolbar, #BMB_bookmarksPopup, #bookmarksMenu)
+           .bookmark-item[container="true"]:not([query="true"], [tagContainer], [dayContainer])[open="true"],
+  :-moz-any(#bookmarks-view, #historyTree, #editBMPanel_folderTree, #placesList, #placeContent)
+           treechildren::-moz-tree-image(title, container, open) {
+    list-style-image: url("./icons/folder-open.svg") !important;
+  }
+
+  /*= Other Folder - Inbox Icon ==============================================*/
+  /* on Menus */
+  #PlacesToolbar #OtherBookmarks,
+  #BMB_bookmarksPopup #BMB_unsortedBookmarks,
+  #bookmarksMenuPopup #menu_unsortedBookmarks,
+  /* Other Bookmarks -- in Sidebar, Library, Add/Edit Bookmark dialog */
+  :-moz-any(#bookmarks-view, #editBMPanel_folderTree, #placesList, #placeContent) treechildren::-moz-tree-image(container, OrganizerQuery_UnfiledBookmarks),
+  :-moz-any(#bookmarks-view, #editBMPanel_folderTree, #placesList, #placeContent) treechildren::-moz-tree-image(container, queryFolder_unfiled_____),
+  #editBMPanel_unfiledRootItem,
+  #editBMPanel_folderMenuList[selectedGuid="unfiled_____"] {
+    list-style-image: url("./icons/mail-inbox-all.svg") !important;
+  }
+
+  /* Other Folder - Open */
+  #PlacesToolbar #OtherBookmarks[open="true"],
+  #BMB_bookmarksPopup #BMB_unsortedBookmarks[open="true"],
+  #bookmarksMenuPopup #menu_unsortedBookmarks[open="true"],
+  :-moz-any(#bookmarks-view, #editBMPanel_folderTree, #placesList, #placeContent)
+           treechildren::-moz-tree-image(container, open, OrganizerQuery_UnfiledBookmarks),
+  :-moz-any(#bookmarks-view, #editBMPanel_folderTree, #placesList, #placeContent)
+           treechildren::-moz-tree-image(container, open, queryFolder_unfiled_____) {
+    list-style-image: url("./icons/mail-inbox.svg") !important;
+  }
+
+  /*= Default Icon - Overide =================================================*/
+  /* https://github.com/mozilla/gecko-dev/blob/master/browser/themes/shared/places/tree-icons.css */
+
+  /* Query */
+  :-moz-any(#historyTree, #placesList, #placeContent) treechildren::-moz-tree-image(title, query) {
+    list-style-image: url("chrome://browser/skin/places/folder-smart.svg") !important;
+  }
+
+  /* History */
+  :-moz-any(#historyTree, #placesList, #placeContent) treechildren::-moz-tree-image(title, query, dayContainer),
+  :-moz-any(#historyTree, #placesList, #placeContent) treechildren::-moz-tree-image(query, OrganizerQuery_history____v) {
+    list-style-image: url("chrome://browser/skin/history.svg") !important;
+  }
+
+  /* Downloads */
+  :-moz-any(#placesList, #placeContent) treechildren::-moz-tree-image(query, OrganizerQuery_downloads__v) {
+    list-style-image: url("chrome://browser/skin/downloads/downloads.svg") !important;
+  }
+
+  /* Tag */
+  :-moz-any(#placesList, #placeContent) treechildren::-moz-tree-image(title, query, tagContainer),
+  :-moz-any(#placesList, #placeContent) treechildren::-moz-tree-image(query, OrganizerQuery_tags_______v) {
+    list-style-image: url("chrome://browser/skin/places/tag.svg") !important;
+  }
+
+  /* Boomark */
+  :-moz-any(#placesList, #placeContent) treechildren::-moz-tree-image(query, OrganizerQuery_allbms_____v) {
+    list-style-image: url("chrome://browser/skin/bookmark.svg") !important;
+  }
+
+  /* Bookmark Toolbar */
+  #BMB_bookmarksPopup #BMB_bookmarksToolbar,       /* Original: Default folder icon */
+  #bookmarksMenuPopup #bookmarksToolbarFolderMenu, /* Original: Default folder icon */
+  :-moz-any(#bookmarks-view, #editBMPanel_folderTree, #placesList, #placeContent) treechildren::-moz-tree-image(container, queryFolder_toolbar_____) {
+    list-style-image: url("chrome://browser/skin/places/bookmarksToolbar.svg") !important;
+  }
+
+  /* Bookmark Menu */
+  :-moz-any(#bookmarks-view, #editBMPanel_folderTree, #placesList, #placeContent)
+           treechildren::-moz-tree-image(container, queryFolder_menu________) {
+    list-style-image: url("chrome://browser/skin/places/bookmarksMenu.svg") !important;
+  }
+
+  /*= Default Icon - Open ====================================================*/
+  /* Query */
+  :-moz-any(#PlacesToolbar, #BMB_bookmarksPopup, #bookmarksMenu)
+           .bookmark-item[container="true"][query="true"]:not([tagContainer])[open="true"]
+                                                             > .menu-iconic-left
+                                                             > .menu-iconic-icon {
+    transform: rotate(15deg) !important;
+  }
+
+  /* History */
+  :-moz-any(#historyTree, #placesList, #placeContent) treechildren::-moz-tree-image(title, query, open, dayContainer),
+  :-moz-any(#historyTree, #placesList, #placeContent)
+           treechildren::-moz-tree-image(query, open, OrganizerQuery_history____v) {
+    list-style-image: url("./icons/history-reverse.svg") !important;
+  }
+
+  /* Tag */
+  :-moz-any(#PlacesToolbar, #BMB_bookmarksPopup, #bookmarksMenu)
+           .bookmark-item[container="true"][tagContainer="true"][open="true"],
+  :-moz-any(#placesList, #placeContent) treechildren::-moz-tree-image(title, query, open, tagContainer),
+  :-moz-any(#placesList, #placeContent) treechildren::-moz-tree-image(query, open, OrganizerQuery_tags_______v) {
+    list-style-image: url("./icons/tag-open.svg") !important;
+  }
+
+  /* Boomark */
+  :-moz-any(#placesList, #placeContent) treechildren::-moz-tree-image(query, open, OrganizerQuery_allbms_____v) {
+    list-style-image: url("chrome://browser/skin/bookmark-hollow.svg") !important;
+  }
+
+  /* Bookmark Toolbar */
+  #BMB_bookmarksPopup #BMB_bookmarksToolbar[open="true"],
+  #bookmarksMenuPopup #bookmarksToolbarFolderMenu[open="true"],
+  :-moz-any(#bookmarks-view, #editBMPanel_folderTree, #placesList, #placeContent)
+           treechildren::-moz-tree-image(container, open, queryFolder_toolbar_____) {
+    list-style-image: url("./icons/bookmarksToolbar-open.svg") !important;
+  }
+
+  /* Bookmark Menu */
+  :-moz-any(#bookmarks-view, #editBMPanel_folderTree, #placesList, #placeContent)
+           treechildren::-moz-tree-image(container, open, queryFolder_menu________) {
+    list-style-image: url("./icons/bookmarksMenu-open.svg") !important; /* or bookmarksMenu-open2.svg" */
+  }
+
   @media (-moz-gtk-csd-available) {
+    /*= Proton ===============================================================*/
     :root {
       --organizer-color: -moz-DialogText;
       --organizer-deemphasized-color: GrayText;