When Anthony Gordon scored the goal that would have crashed any website still offering trains and planes to London on the third weekend in March, he picked up a black-and-white scarf and whipped it above his head in front of the Gallowgate End.
The winger was on message, for the locals had brought those scarves to wave, not wear. Extra layers were not needed here, you see. Not amid a furnace of rampant noise and febrile anticipation. Nerves? Those were booted into touch as quickly as Arsenal were.
A bitter, February night it may have been, but this was black-and-white hot from the off.