[gtksourceview] Adwaita-dark.xml: improve grid line color

[Christian Hergert <chergert src gnome org>]

commit 8f0e7ba1c24a2021a1e1bdf805f6c566d1d6129d
Author: Christian Hergert <chergert redhat com>
Date:   Thu Jan 6 10:08:13 2022 -0800

    Adwaita-dark.xml: improve grid line color

 data/styles/Adwaita-dark.xml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/data/styles/Adwaita-dark.xml b/data/styles/Adwaita-dark.xml
index b60bf6f3..1cea49bc 100644
--- a/data/styles/Adwaita-dark.xml
+++ b/data/styles/Adwaita-dark.xml
@@ -100,7 +100,7 @@
   <style name="current-line-number"         foreground="text6" background="highlight" bold="false"/>
   <style name="right-margin"                foreground="dark1" background="light4"/>
   <style name="draw-spaces"                 foreground="text0"/>
-  <style name="background-pattern"          background="#fafafa"/>
+  <style name="background-pattern"          background="#10101044"/>
   <style name="misspelled-word"             underline="error" underline-color="red2"/>
 
   <style name="bracket-match"               background="light3" bold="true"/>