/usr/share/metview/etc/Coastlines is in metview-data 5.0.0~beta.1-1build1.
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 | PCOAST,
SUBPAGE_FRAME_COLOUR = TAN,
MAP_COASTLINE_COLOUR = OCHRE,
MAP_GRID_COLOUR = TAN,
MAP_LABEL = OFF
|