[gtksourceview/wip/swilmet/improve-style-schemes] styles: classic and tango: don't use #rgba colors, use palette's colors

[Sébastien Wilmet <swilmet src gnome org>]

commit 51a8a29bd70fb4696cd64e120ad23eefbc6ba2e7
Author: Sébastien Wilmet <swilmet informatique-libre be>
Date:   Wed Jul 13 13:08:14 2022 +0200

    styles: classic and tango: don't use #rgba colors, use palette's colors
    
    (1) Don't use rgba with the alpha channel, I think it needs some bug
    fixes in the code, see
    
    https://gitlab.gnome.org/GNOME/gtksourceview/-/issues/280
    "GSV 4: classic and tango style schemes: bug with gutter's background
    color becoming all white"
    when several tabs are opened in the text editor.
    
    (2) For the color replacements, in tango use the palette's color (it's a
    darker gray, which is easier to distinguish from the main area white
    background).
    
    For the "Global Settings", have exactly the same colors between classic
    and tango. (The classic palette lacks the aluminium colors).
    
    Fixes https://gitlab.gnome.org/GNOME/gtksourceview/-/issues/280

 data/styles/classic.xml | 4 ++--
 data/styles/tango.xml   | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/data/styles/classic.xml b/data/styles/classic.xml
index 183f5881..0a9e1339 100644
--- a/data/styles/classic.xml
+++ b/data/styles/classic.xml
@@ -42,11 +42,11 @@
   <color name="purple"     value="#A020F0"/>
 
   <!-- Global Settings -->
-  <style name="line-numbers"                background="#rgba(0,0,0,0.005)"/>
+  <style name="line-numbers"                background="#eeeeec"/>
   <style name="current-line"                background="#eeeeec"/>
   <style name="current-line-number"         background="#eeeeec"/>
   <style name="draw-spaces"                 foreground="#babdb6"/>
-  <style name="background-pattern"          background="#rgba(73,74,71,0.1)"/>
+  <style name="background-pattern"          background="#f3f3f3"/>
 
   <!-- Bracket Matching -->
   <style name="bracket-match"               foreground="white" background="gray"/>
diff --git a/data/styles/tango.xml b/data/styles/tango.xml
index 6b272176..049a54fe 100644
--- a/data/styles/tango.xml
+++ b/data/styles/tango.xml
@@ -54,7 +54,7 @@
   <color name="aluminium6"                  value="#2e3436"/>
 
   <!-- Global Settings -->
-  <style name="line-numbers"                background="#rgba(18,20,21,0.005)"/>
+  <style name="line-numbers"                background="aluminium1"/>
   <style name="current-line"                background="aluminium1"/>
   <style name="current-line-number"         background="aluminium1"/>
   <style name="draw-spaces"                 foreground="aluminium3"/>