No it is not black, it is orange.
The first signal, at 4:45 p.m. Perth time on Saturday, lasted two hours and 20 minutes
• the second, at 9:27 p.m. Saturday, lasted 13 minutes;
• the third signal was picked up Tuesday at 4:27 p.m. and lasted five minutes and 32 seconds;
• the fourth, at 10:17 p.m. Tuesday, was seven minutes long.