Colin is a leading light in the sevens squad preparing for the Commonwealth Games, but he'll endure a few extra days of the cold weather before travelling to Australia.
He explained in The Scotsman: "I will fly out with Emirates to Dubai at midday tomorrow and then on to Melbourne, and I just hope I get a decent seat because I'll probably be a bit battered from tonight I expect! But we made this decision a wee while back because we saw this game looming and it's very important to Glasgow, and I'm determined to do what I can to keep the team heading up the league and going for that place in Europe before I head off.
"Obviously, taking part in the Commonwealth Games is a huge opportunity and I am delighted to be going, but my mind is on nothing other than this game right now. We played well in Munster and perhaps answered those who were questioning whether we could win close games, but if we don't front up and win against the Borders all the hard work in Limerick will be undone."
Colin has added reason to continue his fine form as he is currently negotiating a full-time contract with Glasgow, having operated on a low-paid apprentice deal and then, this season, a contract split between the sevens and Glasgow.
"Seeing everybody else leaving for Melbourne on Tuesday did start to get me excited about that," said Colin in The Herald. "It will be a great experience. Playing in the Telstra Dome with a sell-out crowd will be awesome, but I have to concentrate on the game against the Borders first.
"It was an easy decision [to stay]. This is a great opportunity to get a game for Glasgow and, hopefully, get another win. I'll travel out on Saturday, so there is still plenty of time after I get there."
The 24-year-old has established a fine record in his first season as a full-time member of the Warriors squad. While Dan Parks has been winning over Scotland supporters at Murrayfield, of the five matches the Warriors have won in all competitions, it is his understudy who has been wearing the No.10 jersey in four of them.
Colin scored 21 of Glasgow's points as Munster were beaten 26-20, only the top Irish province's second defeat at Thomond Park in all competitions in the open era.
But he plays down his own contribution. "Personally, all I did was kick the goals and finish off the try," he said. "It was a real team performance that was impressive, especially defensively, to shut out a team like Munster on their own ground, which shows what this team is capable of."
Colin is conscious, too, that while the Warriors currently look as good as their last game, that will also apply after tonight's match. Having been lashed by captain Jonny Petrie for their abject performance last time they played at home, they still have much to prove.
"Before that game people were questioning whether Glasgow could win a close game. We have to prove we can do this. It is all very well going on about the last game, but if we don't front up against the Borders, it will be null and void. We have a score to settle with the Borders after the way we played down at Netherdale."
While European Rugby Cup Ltd organisers yesterday confirmed that back-door entry to next season's Heineken Cup could be available to the third-placed Scottish side, with only one Celtic League point separating them, this is now a vital derby in terms of automatic qualification.