[gtksourceview] Adwaita.xml: tweak CSS styling

[Christian Hergert <chergert src gnome org>]

commit 35292ebb8c133a54e9182189217508e1d5121262
Author: Christian Hergert <chergert redhat com>
Date:   Thu Dec 30 16:45:00 2021 -0800

    Adwaita.xml: tweak CSS styling

 data/styles/Adwaita.xml | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)
---
diff --git a/data/styles/Adwaita.xml b/data/styles/Adwaita.xml
index 0e08101d..fc72a8df 100644
--- a/data/styles/Adwaita.xml
+++ b/data/styles/Adwaita.xml
@@ -147,7 +147,11 @@
 
   <style name="markdown:header"             foreground="teal" scale="1.1"/>
 
-  <style name="css:property-name"           foreground="dark1" bold="true"/>
+  <style name="css:class-selector"          foreground="pink1"/>
+  <style name="css:type-selector"           foreground="teal" bold="true"/>
+  <style name="css:property-name"           bold="true"/>
+  <style name="css:pseudo-selector"         foreground="pink1" bold="true"/>
+  <style name="css:string"                  foreground="orange3"/>
 
   <style name="xml:element-name"            foreground="teal" bold="true"/>
   <style name="xml:attribute-name"          foreground="pink1"/>
@@ -160,6 +164,7 @@
   <style name="def:base-n-integer"          foreground="numbers"/>
   <style name="def:builtin"                 bold="true"/>
   <style name="def:boolean"                 foreground="numbers"/>
+  <style name="def:number"                  foreground="numbers"/>
   <style name="def:comment"                 foreground="text1"/>
   <style name="def:constant"                foreground="text3" bold="true"/>
   <style name="def:decimal"                 foreground="numbers"/>