diff --git a/main/CMakeLists.txt b/main/CMakeLists.txt
index cebd6d4c..c9fe88f1 100644
--- a/main/CMakeLists.txt
+++ b/main/CMakeLists.txt
@@ -34,7 +34,6 @@ set(RESOURCE_LIST
     conversation_selector/conversation_row.ui
     conversation_summary/message_item.ui
     conversation_summary/view.ui
-    conversation_titlebar.ui
     manage_accounts/account_row.ui
     manage_accounts/add_account_dialog.ui
     manage_accounts/dialog.ui
@@ -46,6 +45,8 @@ set(RESOURCE_LIST
     occupant_list_item.ui
     settings_dialog.ui
     unified_window_placeholder.ui
+
+    pre_theme.css
 )
 
 compile_gresources(
diff --git a/main/data/conversation_list_titlebar.ui b/main/data/conversation_list_titlebar.ui
index 6c08881c..f8fabedc 100644
--- a/main/data/conversation_list_titlebar.ui
+++ b/main/data/conversation_list_titlebar.ui
@@ -5,7 +5,7 @@
         <property name="show_close_button">True</property>
         <property name="visible">True</property>
         <style>
-            <class name="left_toolbar"/>
+            <class name="dino-left"/>
         </style>
         <child>
             <object class="GtkMenuButton" id="add_button">
diff --git a/main/data/conversation_titlebar.ui b/main/data/conversation_titlebar.ui
deleted file mode 100644
index 30779079..00000000
--- a/main/data/conversation_titlebar.ui
+++ /dev/null
@@ -1,62 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<interface>
-    <template class="DinoUiConversationTitlebar" parent="GtkHeaderBar">
-        <property name="title"></property>
-        <property name="hexpand">True</property>
-        <property name="show_close_button">True</property>
-        <property name="visible">True</property>
-        <child>
-            <object class="GtkMenuButton" id="menu_button">
-                <property name="visible">True</property>
-                <style>
-                    <class name="image-button"/>
-                </style>
-                <child>
-                    <object class="GtkImage">
-                        <property name="visible">True</property>
-                        <property name="icon-name">open-menu-symbolic</property>
-                        <property name="icon-size">1</property>
-                    </object>
-                </child>
-            </object>
-            <packing>
-                <property name="pack_type">end</property>
-            </packing>
-        </child>
-        <child>
-            <object class="GtkMenuButton"  id="encryption_button">
-                <property name="visible">False</property>
-                <style>
-                    <class name="image-button"/>
-                </style>
-                <child>
-                    <object class="GtkImage">
-                        <property name="visible">True</property>
-                        <property name="icon-size">1</property>
-                    </object>
-                </child>
-            </object>
-            <packing>
-                <property name="pack_type">end</property>
-            </packing>
-        </child>
-        <child>
-            <object class="GtkMenuButton"  id="groupchat_button">
-                <property name="visible">False</property>
-                <style>
-                    <class name="image-button"/>
-                </style>
-                <child>
-                    <object class="GtkImage">
-                        <property name="visible">True</property>
-                        <property name="icon-name">system-users-symbolic</property>
-                        <property name="icon-size">1</property>
-                    </object>
-                </child>
-            </object>
-            <packing>
-                <property name="pack_type">end</property>
-            </packing>
-        </child>
-    </template>
-</interface>
diff --git a/main/data/pre_theme.css b/main/data/pre_theme.css
new file mode 100644
index 00000000..392e603f
--- /dev/null
+++ b/main/data/pre_theme.css
@@ -0,0 +1,10 @@
+/**
+ * This theme file is applied before the operating system theme and any user configuration.
+ * It provides sane defaults for things that are very Dino-specific.
+ */
+
+window.dino-main headerbar.dino-left label.title {
+    opacity: 0;
+    font-size: 0;
+    color: transparent;
+}
\ No newline at end of file
diff --git a/main/src/ui/application.vala b/main/src/ui/application.vala
index 0183e30d..708c63b0 100644
--- a/main/src/ui/application.vala
+++ b/main/src/ui/application.vala
@@ -14,12 +14,15 @@ public class Dino.Ui.Application : Gtk.Application, Dino.Application {
     public SearchPathGenerator? search_path_generator { get; set; }
 
     public Application() throws Error {
-        Object(application_id: "im.dino.Dino", flags: ApplicationFlags.HANDLES_OPEN);
+        Object(application_id: "im.dino", flags: ApplicationFlags.HANDLES_OPEN);
         init();
         Notify.init("dino");
         Environment.set_application_name("Dino");
-        Gtk.Window.set_default_icon_name("dino");
-        IconTheme.get_default().add_resource_path("/im/dino/icons");
+        Window.set_default_icon_name("dino");
+
+        CssProvider provider = new CssProvider();
+        provider.load_from_resource("/im/dino/pre_theme.css");
+        StyleContext.add_provider_for_screen(Gdk.Screen.get_default(), provider, STYLE_PROVIDER_PRIORITY_THEME - 1);
 
         activate.connect(() => {
             if (window == null) {
diff --git a/main/src/ui/conversation_list_titlebar.vala b/main/src/ui/conversation_list_titlebar.vala
index b9a902c8..815807f2 100644
--- a/main/src/ui/conversation_list_titlebar.vala
+++ b/main/src/ui/conversation_list_titlebar.vala
@@ -16,6 +16,10 @@ public class ConversationListTitlebar : Gtk.HeaderBar {
 
     public ConversationListTitlebar(StreamInteractor stream_interactor, Window window) {
         this.stream_interactor = stream_interactor;
+
+        custom_title = new Label("Dino") { visible = true, hexpand = true, xalign = 0 };
+        custom_title.get_style_context().add_class("title");
+
         create_add_menu(window);
     }
 
diff --git a/main/src/ui/conversation_titlebar/view.vala b/main/src/ui/conversation_titlebar/view.vala
index 34191995..9949f4fc 100644
--- a/main/src/ui/conversation_titlebar/view.vala
+++ b/main/src/ui/conversation_titlebar/view.vala
@@ -16,6 +16,7 @@ public class ConversationTitlebar : Gtk.HeaderBar {
         this.stream_interactor = stream_interactor;
         this.window = window;
 
+        this.get_style_context().add_class("dino-right");
         show_close_button = true;
         hexpand = true;
 
diff --git a/main/src/ui/unified_window.vala b/main/src/ui/unified_window.vala
index 3a419161..b3c02189 100644
--- a/main/src/ui/unified_window.vala
+++ b/main/src/ui/unified_window.vala
@@ -26,6 +26,7 @@ public class UnifiedWindow : Window {
         Object(application : application, default_width : 1200, default_height : 700);
         this.stream_interactor = stream_interactor;
 
+        this.get_style_context().add_class("dino-main");
         setup_headerbar();
         setup_unified();
         setup_stack();