GtkDialog: theme dialog with a black bg and white text

This is coherent with the themeing for Palettes and modal
alerts. Follow up of SL #3971

Signed-off-by: Simon Schampijer <simon@laptop.org
Acked-by: Manuel Quiñones <manuq@laptop.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/gtk3/theme/gtk-widgets.css.em b/gtk3/theme/gtk-widgets.css.em
index 58cf450..7eb159e 100644
--- a/gtk3/theme/gtk-widgets.css.em
+++ b/gtk3/theme/gtk-widgets.css.em
@@ -122,6 +122,11 @@ GtkWindow {
     color: @black;
 }
 
+GtkDialog {
+    background-color: @black;
+    color: @white;
+}
+
 SugarIntroWindow {
     background-color: @white;
 }