[gtksourceview] kate.xml: tweak overview map colors

[Christian Hergert <chergert src gnome org>]

commit 57faf2bb5e8821471dd4a571455adb3a198a26ef
Author: Christian Hergert <chergert redhat com>
Date:   Fri Aug 20 15:59:50 2021 -0700

    kate.xml: tweak overview map colors
    
    Fixes #207

 data/styles/kate.xml | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/data/styles/kate.xml b/data/styles/kate.xml
index 93263f0c..86f5b402 100644
--- a/data/styles/kate.xml
+++ b/data/styles/kate.xml
@@ -51,6 +51,7 @@
   <style name="draw-spaces"                 foreground="#d2d2d2"/>
   <style name="background-pattern"          background="#f3f3f3"/>
   <style name="snippet-focus"               foreground="white" background="grey"/>
+  <style name="map-overlay"                 foreground="#333333" background="#43ace8"/>
 
   <!-- Search Matching -->
   <style name="search-match"                background="yellow"/>