[libadwaita/wip/exalm/background-colors: 48/48] Restore button colors

[Alexander Mikhaylenko <alexm src gnome org>]

commit 21e312c3129677513fb1c04e5f5795f7cfa8ce43
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Mon Sep 6 22:31:05 2021 +0500

    Restore button colors

 src/stylesheet/widgets/_buttons.scss | 19 +++++++++++++------
 1 file changed, 13 insertions(+), 6 deletions(-)
---
diff --git a/src/stylesheet/widgets/_buttons.scss b/src/stylesheet/widgets/_buttons.scss
index bee3c20e..da495f21 100644
--- a/src/stylesheet/widgets/_buttons.scss
+++ b/src/stylesheet/widgets/_buttons.scss
@@ -1,3 +1,10 @@
+$button_color: gtkalpha(currentColor, .1);
+$button_hover_color: gtkalpha(currentColor, .15);
+$button_active_color: gtkalpha(currentColor, .25);
+$button_checked_color: gtkalpha(currentColor, .2);
+$button_checked_hover_color: gtkalpha(currentColor, .25);
+$button_checked_active_color: gtkalpha(currentColor, .35);
+
 // stuff for .needs-attention
 @keyframes needs_attention {
   from { background-image: radial-gradient(farthest-side, $accent_bg_color 0%, transparent 0%); }
@@ -11,7 +18,7 @@ button {
     min-width: 16px;
     padding: 5px 10px;
     border-radius: $button_radius;
-    background-color: gtkalpha(currentColor, .1);
+    background-color: $button_color;
     font-weight: bold;
 
     @if $contrast == 'high' {
@@ -22,24 +29,24 @@ button {
     transition: $button_transition;
 
     &:hover {
-      background-color: gtkalpha(currentColor, .15);
+      background-color: $button_hover_color;
     }
 
     &.keyboard-activating,
     &:active {
-      background-color: gtkalpha(currentColor, .25);
+      background-color: $button_active_color;
     }
 
     &:checked {
-      background-color: gtkalpha(currentColor, .2);
+      background-color: $button_checked_color;
 
       &:hover {
-        background-color: gtkalpha(currentColor, .25);
+        background-color: $button_checked_hover_color;
       }
 
       &.keyboard-activating,
       &:active {
-        background-color: gtkalpha(currentColor, .35);
+        background-color: $button_checked_active_color;
       }
     }