/usr/share/themes/Coldsteel/xfwm4/themerc is in xfwm4-themes 4.10.0-2.
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 | active_border_color=#000000
button_offset=0
button_spacing=2
full_width_title=false
inactive_border_color=#000000
title_alignment=left
title_vertical_offset_active=-1
title_vertical_offset_inactive=-1
|