/usr/share/themes/ukui-theme-black/index.theme is in ukui-themes 0+git20170606-1.
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 | [Desktop Entry]
Type=X-GNOME-Metatheme
Name=ukui-theme-black
Comment=black ukui-theme GTK3 theme
Encoding=UTF-8
Name[en]=ukui-theme-black
[X-GNOME-Metatheme]
GtkTheme=ukui-theme-black
MetacityTheme=ukui-theme-black
IconTheme=ukui-icon-theme
CursorTheme=ukui-icon-theme
ButtonLayout=:minimize,maximize,close
|