After a slow start and one clear-cut Foxes chance - saved by Neil Sullivan - we dominated proceedings at the Walkers Stadium and took the spoils thanks to Jamie Slabber's exquisite chip in the second half.
With the returning Chris Perry marshalling the defence, the home side failed to test Sullivan at all in the second half and it was pretty much one-way traffic, despite the slim 1-0 winning margin.
Colin reflected: "I thought we made a very tepid start to the game and as with any contest, you've got to earn the right to be there.
"They were brighter, more adventurous and were the better team for the first 15 minutes. But once we got the tempo of the game and matched them in certain areas then we started to control it and play the way we wanted to.
"We spoke at half-time and I thought we switched play a lot better in the second half - that's where the space was and we had extra bodies in there to use it. We moved players around better.
"Having said all that, it took an exceptional goal to go and win the game. It was a fantastic finish by Jamie to a well-constructed move."
Colin Calderwood was delighted with how his reserve side stepped up the tempo to run out deserved winners at Leicester City last night.