diff --git a/lib/dialogs/confirm_dialog.rb b/lib/dialogs/confirm_dialog.rb
index d80a0fa..ff07d4e 100644
--- a/lib/dialogs/confirm_dialog.rb
+++ b/lib/dialogs/confirm_dialog.rb
@@ -7,9 +7,8 @@ module TAC
 
         color = @dangerous ? Palette::DANGEROUS : Palette::ALERT
 
-
-        @dialog_root.style.border_color = [ color, darken(color, 50) ]
-        @titlebar.style.background = [ color, darken(color, 50) ]
+        @dialog_root.style.default[:border_color] = [ color, darken(color, 50) ]
+        @titlebar.style.default[:background] = [ color, darken(color, 50) ]
 
         background Gosu::Color::GRAY
         label @options[:message]
diff --git a/lib/dialogs/tacnet_dialog.rb b/lib/dialogs/tacnet_dialog.rb
index edeaba3..b291934 100644
--- a/lib/dialogs/tacnet_dialog.rb
+++ b/lib/dialogs/tacnet_dialog.rb
@@ -2,8 +2,8 @@ module TAC
   class Dialog
     class TACNETDialog < Dialog
       def build
-        @dialog_root.style.border_color = [ Palette::TACNET_PRIMARY, Palette::TACNET_SECONDARY ]
-        @titlebar.style.background = [ Palette::TACNET_PRIMARY, Palette::TACNET_SECONDARY ]
+        @dialog_root.style.default[:border_color] = [ Palette::TACNET_PRIMARY, Palette::TACNET_SECONDARY ]
+        @titlebar.style.default[:background] = [ Palette::TACNET_PRIMARY, Palette::TACNET_SECONDARY ]
 
         background Gosu::Color::GRAY
         label @options[:message], width: 1.0