Naismith struck the winner against Mechanics in the first half at Mosset Park to put the Light Blues through to the third round.
His counter came a week after both Macleod and Robbie Crawford broke their senior ducks in the 4-1 Third Division win over Montrose.
Youngster Barrie McKay has also found the net twice this season after breaking into the team while the likes of Andy Little, Ross Perry and Fraser Aird are impressing too.
And although the victory in Moray was the result of an ultimately frustrating affair, Macleod thinks Naismith’s effort marks an additional high point for the Murray Park youth academy.
He said: “The main thing is we are into the next round but it was great for Kal to get his first goal too.
“He’s another young player to have come through and it’s always brilliant to find the net for the first time.
“The really good thing is a lot of us are experiencing that for the first time at the same time and that’s great.”
Macleod was outstanding in midweek as Motherwell were beaten 2-0 in the last 16 of the League Cup at Ibrox.
As much as he learned a lot from that, the teenager feels there are benefits to take from a frustrating afternoon in Moray too.
Macleod added: “It’s always going to be tough when you come to these places but you need to win your battles then play football after that.
“It was a hard one for us here but it was still good to get the win and we will take something from that, even if it wasn’t pretty.
“You need to keep your standards high and I don’t think we played to the best of our abilities. We didn’t really turn up but we got the victory and that was important.”