[sysprof] theme: fix colors on development builds

[Christian Hergert <chergert src gnome org>]

commit a6f34b32cf5d7f640aaaacd70b0dd24d6ddc2c3c
Author: Christian Hergert <chergert redhat com>
Date:   Tue Oct 16 17:34:56 2018 -0700

    theme: fix colors on development builds

 src/resources/theme/Adwaita-shared.css | 4 ++++
 1 file changed, 4 insertions(+)
---
diff --git a/src/resources/theme/Adwaita-shared.css b/src/resources/theme/Adwaita-shared.css
index 4a78e1d..80c4f01 100644
--- a/src/resources/theme/Adwaita-shared.css
+++ b/src/resources/theme/Adwaita-shared.css
@@ -6,3 +6,7 @@ window.development-version headerbar {
                               @theme_bg_color 25%);
   color: alpha(@theme_fg_color, 0.2);
 }
+
+window.development-version headerbar box label {
+  color: @theme_fg_color;
+}