[gnome-builder/wip/gtk4-port: 1475/1774] libide/gui: fix up recoloring for dark schemes a bit

[Christian Hergert <chergert src gnome org>]

commit 8c889530870f6f1f463b7c1fb88223f7f92324f1
Author: Christian Hergert <chergert redhat com>
Date:   Fri Jun 10 23:59:34 2022 -0700

    libide/gui: fix up recoloring for dark schemes a bit
    
    Better contrast for popover vs adwaita card colors.

 src/libide/gui/ide-recoloring.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/libide/gui/ide-recoloring.c b/src/libide/gui/ide-recoloring.c
index bef1dc2f9..897d3531b 100644
--- a/src/libide/gui/ide-recoloring.c
+++ b/src/libide/gui/ide-recoloring.c
@@ -38,8 +38,8 @@
   "@define-color popover_bg_color mix(@window_bg_color, white, .1);\n" \
   "@define-color card_bg_color alpha(white, .6);\n"
 #define DARK_CSS_SUFFIX \
-  "@define-color popover_bg_color mix(@window_bg_color, white, 0.07);\n" \
-  "@define-color card_bg_color @popover_bg_color;\n" \
+  "@define-color popover_bg_color mix(@window_bg_color, white, .025);\n" \
+  "@define-color card_bg_color mix(@window_bg_color, white, .1);\n" \
   "@define-color view_bg_color darker(@window_bg_color);\n"
 
 enum {