I have to agree with ANC then. Probably normal for the strain. You should get a better scope, they sell them really cheap on Amazon and they hook right on to your phone, so you can take pictures. If you harvest based off the amount of orange/brown/red hairs there are, you might be harvesting at the wrong time. The most accurate and agreed upon method is A: Matter of preference and B: When the trichs have reached the ripeness that you prefer. If you go based off hairs alone, that's just winging it. Now, if you had grown this strain out a handful of times and had a lot of experience with this strain, I wouldn't say that. But for a new strain that you aren't experienced with, going by the hairs, I wouldn't advise.
It's possible the temperature change shocked it, I've read about heat stress causing this, but not cold. Thing is, it's much more often a grower is dealing with heat issues...
As far as bud size goes, I think you mentioned in another comment, don't take this the wrong way, but it is, after all, bagseed
She looks good too, from what I can tell! I feel like it's an unwritten rule that if you're going to grow bagseed, this is par for the course. Even if you know the strain of the bud you got it from, chances are you don't know what pollinated it.
I understand your concern, but I say keep an extra eye on her and let her do her thing. Not long now until you're growing something else anyway. If the bud you got that seed from was good enough that you went out of your way to grow it, then I'm sure it will be worth it.