-treechildren:-moz-tree-cell-text(folderNameCol, newMessages-true),
-treechildren:-moz-tree-cell-text(folderNameCol, specialFolder-Inbox, newMessages-true) {
+treechildren::-moz-tree-cell-text(folderNameCol, newMessages-true),
+treechildren::-moz-tree-cell-text(folderNameCol, specialFolder-Inbox, newMessages-true) {