ready for harvest?

Alright this is my first grow so im hoping you guys can answer these harvest ?'s cool so ive got two plants outside in a pot and the buds are huge, but i heard you can tell when its time to harvest by how many red hairs there are, and there aren't many. its probably about 80-90% white hairs to 10-20% red. but its been like that all month so im wondering if this strain just doesnt have a lot of red hairs. all that seems to be changing about the plant this month is the thickness and number of white hairs. the rerason im asking about harvesting is because i know we're supposed to have cold weather this week, and im wondering if these are ready or not. thanks

any answers?

How old are the plants?
How many days in to flowering?
And you need a 30x magnifier to see the (Trichroms). And if most are white and some are amber than it is ready. Not sure on the correct %'s of color is it suposta be. But I can tell you this going by the hairs color isnt always such a good way to go.

when they are 50% amber is the time to chop

Picture please,...

iloveyou

oh i cant get a picture, i definately would if i could. i love you too

Grab a small pocket microscope, 15x is adequate but you really need a 30x one (Ive heard Radio Shack do them in the US, I suppose you could get one from eBay) and look at the trichomes. When theyre all cloudy you can harvest then for a more sativa oriented head high, or you can wait a little longer until you have 50% amber, this will give an indica couchlock feeling.
Of course it also depends on how sativa/indica the strain is too :)

Edit: you can also harvest by looking at the pistils (hairs), but this isnt exactly accurate. If you do this, then harvest at 50% amber/red.

alright i got some pics, i couldnt get close enough to see the hairs but i already explained that ratio anyway. heres my bitches

here

damn dude,, i think thats coming pretty close to harvest time, but dont take my word for it