Our second string started the game with seven under-19 players - the others being Neil Sullivan, Chris Perry, Alton Thelwell and Rohan Ricketts. Under-17 players Danny Foster and Michael Malcolm were introduced in the second half.
Chris Bart-Williams thumped home Charlton's winner after just five minutes before Colin's young charges re-grouped and established a real foothold in the game.
"It was a little concern to me that we conceded so early and the manner that we did was a little bit immature," reflected Colin. "There wasn't anyone within yards of Chris when he struck the goal, so there was a bit of naivety in that part of it.
"From then, to come back, build themselves into the game and compete in the game, we've got to take heart from.
"There were boys playing in their first reserve game and it was their opportunity. I've said it before, they've got to seize the moment a little bit because it might take time before it comes again."
The only thing lacking from the display was a little calmness in the final third - many of the efforts on goal coming from range.
"I don't think we troubled the keeper too much - certainly not with anything from inside their box. We had shots from outside and the pleasing thing is that we had shots. I don't remember a game where we've had six or so efforts from outside the area.
"I think the best one came at the end of the first half and it needed a calmer finish at the end of it. I'm pleased that we ended up with shots and they came from good build-up play overall.
"It was a real physical effort for them to match up to Charlton's experience and it led to a good even contest."
Colin Calderwood says his reserve side can take heart from a performance of great endeavour against an experienced Charlton side at the Valley on Tuesday evening.