[gnome-shell] panel: Don't change text color when entering the overview or lockscreen

[Marge Bot <marge-bot src gnome org>]

commit 3eb40df06b5c4209834039027ec69e64bd343633
Author: Jonas Dreßler <verdre v0yd nl>
Date:   Mon Mar 1 10:21:58 2021 +0100

    panel: Don't change text color when entering the overview or lockscreen
    
    With the introduction of the transparent panel in the overview, we
    started making the panel text/icon color slightly brighter in the
    overview and on the lockscreen to ensure best contrast. Now
    unfortunately, setting the text color incurred a relayout of the
    underlying ClutterText actor (fixed with
    https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1750), and
    setting the icon color causes the icon texture to get regenerated
    (fixed with
    https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/932).
    Regenerating the icon texture will replace the icon actor, which also
    causes a relayout.
    
    This relayout of the panel has been measured to add at least 1
    millisecond (the numbers fluctuated a lot) to about 5 ms it takes to
    layout the first frame when showing the overview.
    
    Since https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/932 is
    unlikely to land this cycle, this commit proposes a different solution:
    Simply don't use a different color for text in the overview. To avoid
    issues with contrast in the overview, make the default color slightly
    brighter and change it from #ccc to #ddd.
    
    Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1733>

 data/theme/gnome-shell-sass/widgets/_panel.scss | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)
---
diff --git a/data/theme/gnome-shell-sass/widgets/_panel.scss b/data/theme/gnome-shell-sass/widgets/_panel.scss
index 966fb6c77e..bf7e37db6a 100644
--- a/data/theme/gnome-shell-sass/widgets/_panel.scss
+++ b/data/theme/gnome-shell-sass/widgets/_panel.scss
@@ -3,7 +3,7 @@
 
 $panel_corner_radius: $base_border_radius+1;
 $panel_bg_color: #000;
-$panel_fg_color: #ccc;
+$panel_fg_color: #ddd;
 $panel_height: 2.2em;
 $panel_transition_duration: 250ms; // same as the overview transition duration
 
@@ -99,8 +99,6 @@ $panel_transition_duration: 250ms; // same as the overview transition duration
   &.login-screen,
   &:overview {
     .panel-button {
-      color: lighten($fg_color, 3%);
-
       &:hover, &:active, &:overview, &:focus, &:checked {
         box-shadow: inset 0 0 0 100px rgba(255, 255, 255, 0.15);
 
@@ -139,4 +137,4 @@ $panel_transition_duration: 250ms; // same as the overview transition duration
 #appMenu .panel-status-menu-box {
   padding: 0 $base_padding;
   spacing: $base_spacing;
-}
\ No newline at end of file
+}