/usr/share/themes/Greybird/xfwm4/themerc is in greybird-gtk-theme 3.22.8-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 | # Author: Simon Steinbeiß <simon.steinbeiss@elfenbeinturm.at>
# Modified by: Marcelo Aguero <marceloaguero@gmail.com>
# Modified again by: Simon Steinbeiß <simon.steinbeiss@elfenbeinturm.at>
# Author of original metacity theme: elementart Art Team
# Greybird theme for xfwm4 using GTK color pickup.
# License: GPL
# Date: January 2011
active_text_color=#686868
active_text_shadow_color=#ececec
inactive_text_color=#bbbbbb
inactive_text_shadow_color=#ececec
title_shadow_active=true
title_shadow_inactive=true
full_width_title=true
title_vertical_offset_active=2
title_vertical_offset_inactive=2
button_offset=4
button_spacing=2
shadow_delta_height=2
shadow_delta_width=0
shadow_delta_x=0
shadow_delta_y=-10
shadow_opacity=50
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