Used by the routines at OBJECT_DONE and LOOSE_VALVE.

On the first turn in a room (OBJECT_DONE) and when a chamber is activated (LOOSE_VALVE). The whole attribute file gets the room's ink, bright on black, and then the panel its colours: the lives bright white, the light-years box red round white digits (COLOUR_CLOCK_BOX), the carried things (SHOW_CARRIED, part way in), the LIGHT YEARS label and the chamber icon in a colour chosen from the room's ink, and the count of chambers and of lives.

The label's colour is 2 plus 7 less the room's ink, bright on black: never the room's own colour for the inks the rooms use (3 to 6 on the tape, and 7 once a chamber is activated), and red in an activated chamber. It is written into the first byte of the label's text (LIGHT_YEARS_TEXT), where the printer takes a line's colour from, and read back from there for the icon.