/usr/share/themes/Wasp-Murrine/xfwm4/themerc is in community-themes 0.23.2.
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 | button_offset=5
button_spacing=8
maximized_offset=6
show_app_icon=true
full_width_title=false
title_alignment=center
button_layout=O|HMC
active_text_color=#ffffff
inactive_text_color=#787878
shadow_delta_height=0
shadow_delta_width=0
shadow_delta_x=0
shadow_delta_y=-7
show_frame_shadow=true
show_popup_shadow=true
|