Having both been involved in Shankly's masterplan ahead of the game, Ian St John and Ron Yeats were each on the scoresheet that evening, alongside Roger Hunt.
Writing about the origins of the change in his autobiography, St John detailed: "Shankly thought the colour scheme would carry psychological impact - red for danger, red for power.
"He came into the dressing room one day and threw a pair of red shorts to Ronnie Yeats. 'Get into those shorts and let's see how you look,' he said. 'Ronnie, you look awesome, terrifying. You look seven feet tall.'"
Yeats himself remembered: "We'd just finished training and I was on the way home when Shanks called me back.
"My initial reaction was that I'd done something wrong. Either that or I was getting a pay rise! Anyway, it was neither. 'I want you to try on this all-red strip,' he asked. So I went into the dressing room and put it on.
"I came out and the boss was nowhere to be seen so I went down the steps towards the players' tunnel and I could see him out in the middle of the pitch with Bob Paisley.
"I made my way towards them and as I got closer, Shanks came out with that immortal line about me looking seven feet tall. 'We're going to play in all-red from now on.'
"We wore it the next night and beat Anderlecht 3-0. That was that and Liverpool have played in these colours ever since."
The evolution was completed when the clubs met again on December 16, 1964, with red socks now added to the uniform for the first time.
A last-minute goal from Hunt ensured the occasion was toasted with a victory, too, Shankly's men winning 1-0.
The new, all-red strip would be used in cup competitions during the remainder of that campaign, which culminated in another landmark for the club.
In May 1965, Liverpool stepped out at Wembley decked out entirely in red and won the FA Cup for the first time by beating Leeds United 2-1.
Who can say whether it had truly affected opponents, but Shankly's brainwave was now undoubtedly the future, and it remains one of the most powerful decisions in LFC history.