[gnome-builder] Adwaita.xml: fix overlay colors

[Christian Hergert <chergert src gnome org>]

commit e1bbc497aac4bb643a41f365740862397db31575
Author: Christian Hergert <chergert redhat com>
Date:   Sun Jan 23 16:23:27 2022 -0800

    Adwaita.xml: fix overlay colors

 data/style-schemes/Adwaita.style-scheme.xml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/data/style-schemes/Adwaita.style-scheme.xml b/data/style-schemes/Adwaita.style-scheme.xml
index 86a69ae66..16c911e34 100644
--- a/data/style-schemes/Adwaita.style-scheme.xml
+++ b/data/style-schemes/Adwaita.style-scheme.xml
@@ -92,7 +92,7 @@
   <style name="current-line-number"        background="light_3" foreground="light_7"/>
   <style name="draw-spaces"                foreground="light_6"/>
   <style name="line-numbers"               background="light_2" foreground="light_6"/>
-  <style name="map-overlay"                background="dark_1"/>
+  <style name="map-overlay"                background="#rgba(47,46,48,.3)"/>
   <style name="right-margin"               background="dark_1" foreground="dark_1"/>
   <style name="search-match"               background="#FCF7B5" foreground="dark_4"/>
   <style name="text"                       background="light_2" foreground="dark_3"/>