diff --git a/libdino/src/service/presence_manager.vala b/libdino/src/service/presence_manager.vala
index fd78496f..6a8d77aa 100644
--- a/libdino/src/service/presence_manager.vala
+++ b/libdino/src/service/presence_manager.vala
@@ -47,9 +47,10 @@ public class PresenceManager : StreamInteractionModule, Object {
                 return null;
             }
             ArrayList<Jid> ret = new ArrayList<Jid>(Jid.equals_func);
-            foreach (string resource in resources) {
+            resources.foreach((resource) => {
                 ret.add(new Jid(resource));
-            }
+                return true;
+            });
             return ret;
         }
         return null;
diff --git a/main/CMakeLists.txt b/main/CMakeLists.txt
index 839d5c50..ef78f446 100644
--- a/main/CMakeLists.txt
+++ b/main/CMakeLists.txt
@@ -44,7 +44,6 @@ set(RESOURCE_LIST
     menu_encryption.ui
     occupant_list.ui
     occupant_list_item.ui
-    style.css
     settings_dialog.ui
     unified_window.ui
 )
diff --git a/main/data/add_conversation/add_contact_dialog.ui b/main/data/add_conversation/add_contact_dialog.ui
index 58c13e7f..1ac2745c 100644
--- a/main/data/add_conversation/add_contact_dialog.ui
+++ b/main/data/add_conversation/add_contact_dialog.ui
@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <interface>
-    <requires lib="gtk+" version="3.0"/>
     <template class="DinoUiAddConversationChatAddContactDialog">
         <property name="default_width">300</property>
         <property name="modal">True</property>
diff --git a/main/data/add_conversation/add_groupchat_dialog.ui b/main/data/add_conversation/add_groupchat_dialog.ui
index c6390374..4c58ed89 100644
--- a/main/data/add_conversation/add_groupchat_dialog.ui
+++ b/main/data/add_conversation/add_groupchat_dialog.ui
@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <interface>
-    <requires lib="gtk+" version="3.0"/>
     <template class="DinoUiAddConversationConferenceAddGroupchatDialog">
         <property name="default_width">400</property>
         <property name="modal">True</property>
diff --git a/main/data/add_conversation/conference_details_fragment.ui b/main/data/add_conversation/conference_details_fragment.ui
index 403d9a94..c9431728 100644
--- a/main/data/add_conversation/conference_details_fragment.ui
+++ b/main/data/add_conversation/conference_details_fragment.ui
@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <interface>
-    <requires lib="gtk+" version="3.0"/>
     <template class="DinoUiAddConversationConferenceConferenceDetailsFragment">
         <property name="visible">True</property>
         <child>
diff --git a/main/data/add_conversation/list_row.ui b/main/data/add_conversation/list_row.ui
index 8f011bb8..9b662412 100644
--- a/main/data/add_conversation/list_row.ui
+++ b/main/data/add_conversation/list_row.ui
@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <interface>
-    <requires lib="gtk+" version="3.0"/>
     <template class="DinoUiAddConversationListRow" parent="GtkListBoxRow">
         <property name="visible">True</property>
         <child>
diff --git a/main/data/add_conversation/select_jid_fragment.ui b/main/data/add_conversation/select_jid_fragment.ui
index 612f1597..6384edb0 100644
--- a/main/data/add_conversation/select_jid_fragment.ui
+++ b/main/data/add_conversation/select_jid_fragment.ui
@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <interface>
-    <requires lib="gtk+" version="3.0"/>
     <template class="DinoUiAddConversationSelectJidFragment">
         <property name="height_request">500</property>
         <property name="width_request">460</property>
diff --git a/main/data/conversation_list_titlebar.ui b/main/data/conversation_list_titlebar.ui
index 6a5996df..6be6ffc7 100644
--- a/main/data/conversation_list_titlebar.ui
+++ b/main/data/conversation_list_titlebar.ui
@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <interface>
-    <requires lib="gtk+" version="3.0"/>
     <template class="DinoUiConversationListTitlebar" parent="GtkHeaderBar">
         <property name="hexpand">False</property>
         <property name="visible">True</property>
diff --git a/main/data/conversation_selector/chat_row_tooltip.ui b/main/data/conversation_selector/chat_row_tooltip.ui
index 90fbd712..6596cd62 100644
--- a/main/data/conversation_selector/chat_row_tooltip.ui
+++ b/main/data/conversation_selector/chat_row_tooltip.ui
@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <interface>
-    <requires lib="gtk+" version="3.0"/>
     <object class="GtkBox" id="main_box">
         <property name="orientation">vertical</property>
         <property name="visible">True</property>
diff --git a/main/data/conversation_selector/conversation_row.ui b/main/data/conversation_selector/conversation_row.ui
index 5f8498e9..a932ed85 100644
--- a/main/data/conversation_selector/conversation_row.ui
+++ b/main/data/conversation_selector/conversation_row.ui
@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <interface>
-    <requires lib="gtk+" version="3.0"/>
     <template class="DinoUiConversationSelectorConversationRow">
         <property name="visible">True</property>
         <style>
diff --git a/main/data/conversation_selector/view.ui b/main/data/conversation_selector/view.ui
index 4bac39bc..0dd2d00f 100644
--- a/main/data/conversation_selector/view.ui
+++ b/main/data/conversation_selector/view.ui
@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <interface>
-    <requires lib="gtk+" version="3.0"/>
     <template class="DinoUiConversationSelectorView">
         <property name="can_focus">True</property>
         <property name="width_request">40</property>
diff --git a/main/data/conversation_summary/message_item.ui b/main/data/conversation_summary/message_item.ui
index f21b4969..eac97279 100644
--- a/main/data/conversation_summary/message_item.ui
+++ b/main/data/conversation_summary/message_item.ui
@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <interface>
-    <requires lib="gtk+" version="3.0"/>
     <template class="DinoUiConversationSummaryMergedMessageItem">
         <property name="hexpand">True</property>
         <property name="column-spacing">7</property>
diff --git a/main/data/conversation_summary/view.ui b/main/data/conversation_summary/view.ui
index 74fb507e..88905268 100644
--- a/main/data/conversation_summary/view.ui
+++ b/main/data/conversation_summary/view.ui
@@ -1,9 +1,10 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <interface>
-    <requires lib="gtk+" version="3.0"/>
     <template class="DinoUiConversationSummaryView">
         <property name="expand">True</property>
         <property name="visible">True</property>
+        <property name="homogeneous">False</property>
+        <property name="spacing">0</property>
         <child>
             <object class="GtkScrolledWindow" id="scrolled">
                 <property name="visible">True</property>
diff --git a/main/data/conversation_titlebar.ui b/main/data/conversation_titlebar.ui
index e173bdf3..30779079 100644
--- a/main/data/conversation_titlebar.ui
+++ b/main/data/conversation_titlebar.ui
@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <interface>
-    <requires lib="gtk+" version="3.0"/>
     <template class="DinoUiConversationTitlebar" parent="GtkHeaderBar">
         <property name="title"></property>
         <property name="hexpand">True</property>
diff --git a/main/data/manage_accounts/account_row.ui b/main/data/manage_accounts/account_row.ui
index ab700daa..154c7ae4 100644
--- a/main/data/manage_accounts/account_row.ui
+++ b/main/data/manage_accounts/account_row.ui
@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <interface>
-    <requires lib="gtk+" version="3.0"/>
     <template class="DinoUiManageAccountsAccountRow">
         <property name="visible">True</property>
         <child>
diff --git a/main/data/manage_accounts/add_account_dialog.ui b/main/data/manage_accounts/add_account_dialog.ui
index dd5264f1..c38f624a 100644
--- a/main/data/manage_accounts/add_account_dialog.ui
+++ b/main/data/manage_accounts/add_account_dialog.ui
@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <interface>
-    <requires lib="gtk+" version="3.0"/>
     <template class="DinoUiManageAccountsAddAccountDialog">
         <property name="default_width">300</property>
         <property name="modal">True</property>
diff --git a/main/data/menu_encryption.ui b/main/data/menu_encryption.ui
index 216bdd92..7aae53ee 100644
--- a/main/data/menu_encryption.ui
+++ b/main/data/menu_encryption.ui
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <interface>
-    <requires lib="gtk+" version="3.20"/>
+    <requires lib="gtk+" version="3.16"/>
     <object class="GtkPopoverMenu" id="menu_encryption">
         <property name="can_focus">False</property>
         <child>
diff --git a/main/data/occupant_list.ui b/main/data/occupant_list.ui
index deb4716e..60fb2dac 100644
--- a/main/data/occupant_list.ui
+++ b/main/data/occupant_list.ui
@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <interface>
-    <requires lib="gtk+" version="3.0"/>
     <template class="DinoUiOccupantList">
         <property name="visible">True</property>
         <child>
diff --git a/main/data/occupant_list_item.ui b/main/data/occupant_list_item.ui
index aabe8a05..34f4107f 100644
--- a/main/data/occupant_list_item.ui
+++ b/main/data/occupant_list_item.ui
@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <interface>
-    <requires lib="gtk+" version="3.0"/>
     <template class="DinoUiOccupantListRow" parent="GtkListBoxRow">
         <property name="visible">True</property>
         <child>
diff --git a/main/data/settings_dialog.ui b/main/data/settings_dialog.ui
index 3b939216..51619c29 100644
--- a/main/data/settings_dialog.ui
+++ b/main/data/settings_dialog.ui
@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <interface>
-    <requires lib="gtk+" version="3.0"/>
     <template class="DinoUiSettingsDialog">
         <property name="modal">True</property>
         <property name="visible">True</property>
diff --git a/main/data/style.css b/main/data/style.css
deleted file mode 100644
index d143ffd3..00000000
--- a/main/data/style.css
+++ /dev/null
@@ -1,3 +0,0 @@
-scrolledwindow {
-    background-color: white;
-}
\ No newline at end of file
diff --git a/main/data/unified_window.ui b/main/data/unified_window.ui
index 289c00cf..5ae01493 100644
--- a/main/data/unified_window.ui
+++ b/main/data/unified_window.ui
@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <interface>
-    <requires lib="gtk+" version="3.0"/>
     <template class="DinoUiWindow">
         <property name="default-width">1200</property>
         <property name="default-height">700</property>
diff --git a/main/src/ui/application.vala b/main/src/ui/application.vala
index fe930b82..8dbe176b 100644
--- a/main/src/ui/application.vala
+++ b/main/src/ui/application.vala
@@ -16,8 +16,6 @@ public class Dino.Ui.Application : Dino.Application {
         notifications = new Notifications(stream_interaction);
         notifications.start();
         Environment.set_application_name("Dino");
-
-        load_css();
     }
 
     public override void activate() {
@@ -83,16 +81,5 @@ public class Dino.Ui.Application : Dino.Application {
     private void remove_connection(Account account) {
         stream_interaction.disconnect(account);
     }
-
-    private void load_css() {
-        var css_provider = new Gtk.CssProvider ();
-        try {
-            var file = File.new_for_uri("resource:///org/dino-im/style.css");
-            css_provider.load_from_file (file);
-        } catch (GLib.Error e) {
-            warning ("loading css: %s", e.message);
-        }
-        Gtk.StyleContext.add_provider_for_screen (Gdk.Screen.get_default(), css_provider, Gtk.STYLE_PROVIDER_PRIORITY_APPLICATION);
-    }
 }
 
diff --git a/main/src/ui/conversation_summary/merged_message_item.vala b/main/src/ui/conversation_summary/merged_message_item.vala
index fa198d21..0270ef42 100644
--- a/main/src/ui/conversation_summary/merged_message_item.vala
+++ b/main/src/ui/conversation_summary/merged_message_item.vala
@@ -22,21 +22,50 @@ public class MergedMessageItem : Grid {
     [GtkChild] private Image received_image;
     [GtkChild] private TextView message_text_view;
 
+    private StreamInteractor stream_interactor;
+    private TextTag link_tag;
+
     public MergedMessageItem(StreamInteractor stream_interactor, Conversation conversation, Message message) {
         this.conversation = conversation;
         this.from = message.from;
         this.initial_time = message.time;
+        this.stream_interactor = stream_interactor;
         setup_tags();
         add_message(message);
 
         time_label.label = get_relative_time(initial_time.to_local());
-        string display_name = Util.get_message_display_name(stream_interactor, message, conversation.account);
-        name_label.set_markup(@"<span foreground=\"#$(Util.get_name_hex_color(display_name))\">$display_name</span>");
         Util.image_set_from_scaled_pixbuf(image, (new AvatarGenerator(30, 30, image.scale_factor)).draw_message(stream_interactor, message));
         if (message.encryption != Encryption.NONE) {
             encryption_image.visible = true;
             encryption_image.set_from_icon_name("changes-prevent-symbolic", IconSize.SMALL_TOOLBAR);
         }
+        name_label.label = Util.get_message_display_name(stream_interactor, message, conversation.account);
+
+        update_display_style();
+        message_text_view.style_updated.connect(style_changed);
+    }
+
+    private void style_changed() {
+        lock(message_text_view) {
+            message_text_view.style_updated.disconnect(style_changed);
+            update_display_style();
+            message_text_view.style_updated.connect(style_changed);
+        }
+    }
+
+    private void update_display_style() {
+        TextView tmp = new TextView();
+        RGBA bg = tmp.get_style_context().get_background_color(StateFlags.NORMAL);
+        bool dark_theme = (bg.red < 0.5 && bg.green < 0.5 && bg.blue < 0.5);
+
+        string display_name = Util.get_message_display_name(stream_interactor, messages[0], conversation.account);
+        name_label.set_markup(@"<span foreground=\"#$(Util.get_name_hex_color(display_name, dark_theme))\">$display_name</span>");
+
+        LinkButton lnk = new LinkButton("http://example.com");
+        RGBA link_color = lnk.get_style_context().get_color(StateFlags.LINK);
+        link_tag.foreground_rgba = link_color;
+
+        message_text_view.override_background_color(0, {0,0,0,0});
     }
 
     public void update() {
@@ -104,7 +133,7 @@ public class MergedMessageItem : Grid {
     }
 
     private void setup_tags() {
-        message_text_view.buffer.create_tag("url", underline: Pango.Underline.SINGLE, foreground: "blue");
+        link_tag = message_text_view.buffer.create_tag("url", underline: Pango.Underline.SINGLE, foreground: "blue");
         message_text_view.button_release_event.connect(open_url);
         message_text_view.motion_notify_event.connect(change_cursor_over_url);
     }
diff --git a/main/src/ui/conversation_summary/view.vala b/main/src/ui/conversation_summary/view.vala
index d2599041..87c553c5 100644
--- a/main/src/ui/conversation_summary/view.vala
+++ b/main/src/ui/conversation_summary/view.vala
@@ -27,7 +27,6 @@ public class View : Box {
     bool reloading = false;
 
     public View(StreamInteractor stream_interactor) {
-        Object(homogeneous : false, spacing : 0);
         this.stream_interactor = stream_interactor;
         scrolled.vadjustment.notify["upper"].connect_after(on_upper_notify);
         scrolled.vadjustment.notify["value"].connect(on_value_notify);
@@ -50,6 +49,23 @@ public class View : Box {
             }
             return true;
         });
+
+        update_background_color();
+        this.style_updated.connect(style_changed);
+    }
+
+    private void update_background_color() {
+        TextView tmp = new TextView();
+        this.override_background_color(0, tmp.get_style_context().get_background_color(0));
+        main.override_background_color(0, tmp.get_style_context().get_background_color(0));
+    }
+
+    private void style_changed() {
+        lock (main) {
+            this.style_updated.disconnect(style_changed);
+            update_background_color();
+            this.style_updated.connect(style_changed);
+        }
     }
 
     public void initialize_for_conversation(Conversation? conversation) {
@@ -129,7 +145,7 @@ public class View : Box {
         if (was_upper == null || scrolled.vadjustment.value >  was_upper - was_page_size - 1 ||
                 scrolled.vadjustment.value >  was_upper - was_page_size - 1) { // scrolled down or content smaller than page size
             scrolled.vadjustment.value = scrolled.vadjustment.upper - scrolled.vadjustment.page_size; // scroll down
-        } else if (scrolled.vadjustment.value < scrolled.vadjustment.upper - scrolled.vadjustment.page_size - 1){
+        } else if (scrolled.vadjustment.value < scrolled.vadjustment.upper - scrolled.vadjustment.page_size - 1) {
             scrolled.vadjustment.value = scrolled.vadjustment.upper - was_upper + scrolled.vadjustment.value; // stay at same content
         }
         was_upper = scrolled.vadjustment.upper;
diff --git a/main/src/ui/util.vala b/main/src/ui/util.vala
index 0a294731..aad0817d 100644
--- a/main/src/ui/util.vala
+++ b/main/src/ui/util.vala
@@ -9,17 +9,21 @@ public class Util : Object {
 
     private const string[] tango_colors_light = {"FCE94F", "FCAF3E", "E9B96E", "8AE234", "729FCF", "AD7FA8", "EF2929"};
     private const string[] tango_colors_medium = {"EDD400", "F57900", "C17D11", "73D216", "3465A4", "75507B", "CC0000"};
-    private const string[] material_colors_500 = {"F44336", "E91E63", "9C27B0", "673AB7", "3f51B5", "2196F3", "03A9f4", "00BCD4", "009688", "4CAF50", "8BC34a", "CDDC39", "FFEB3B", "FFC107", "FF9800", "FF5722", "795548"};
-    private const string[] material_colors_300 = {"E57373", "F06292", "BA68C8", "9575CD", "7986CB", "64B5F6", "4FC3F7", "4DD0E1", "4DB6AC", "81C784", "AED581", "DCE775", "FFF176", "FFD54F", "FFB74D", "FF8A65", "A1887F"};
-    private const string[] material_colors_200 = {"EF9A9A", "F48FB1", "CE93D8", "B39DDB", "9FA8DA", "90CAF9", "81D4FA", "80DEEA", "80CBC4", "A5D6A7", "C5E1A5", "E6EE9C", "FFF59D", "FFE082", "FFCC80", "FFAB91", "BCAAA4"};
+    private const string[] material_colors_500 = {"F44336", "E91E63", "9C27B0", "673AB7", "3f51B5", "2196F3", "03A9f4", "00BCD4", "009688", "4CAF50", "8BC34a", "CDDC39", "FFC107", "FF9800", "FF5722", "795548"};
+    private const string[] material_colors_300 = {"E57373", "F06292", "BA68C8", "9575CD", "7986CB", "64B5F6", "4FC3F7", "4DD0E1", "4DB6AC", "81C784", "AED581", "DCE775", "FFD54F", "FFB74D", "FF8A65", "A1887F"};
+    private const string[] material_colors_200 = {"EF9A9A", "F48FB1", "CE93D8", "B39DDB", "9FA8DA", "90CAF9", "81D4FA", "80DEEA", "80CBC4", "A5D6A7", "C5E1A5", "E6EE9C", "FFE082", "FFCC80", "FFAB91", "BCAAA4"};
 
     public static string get_avatar_hex_color(string name) {
         return material_colors_300[name.hash() % material_colors_300.length];
 //        return tango_colors_light[name.hash() % tango_colors_light.length];
     }
 
-    public static string get_name_hex_color(string name) {
-        return material_colors_500[name.hash() % material_colors_500.length];
+    public static string get_name_hex_color(string name, bool dark_theme = false) {
+        if (dark_theme) {
+            return material_colors_300[name.hash() % material_colors_300.length];
+        } else {
+            return material_colors_500[name.hash() % material_colors_500.length];
+        }
 //        return tango_colors_medium[name.hash() % tango_colors_medium.length];
     }