Looks bad for my plant

So I have been unable to take pictures that can really capture the color of the plant (only have a camera phone) but the majority of the leaves are getting very yellow. I checked some of the pictures on the how to threads here and it started like what looked to be nute burn so I'm wondering if it is just an extreme case of nute burn? I have it set up hydroponically with a 400watt HPS using fox farm and one other. I flushed it and there is only pure, pH adjusted water now, but I'm afraid it may be too late. The buds are very very developed and hairs are starting to turn orange. At this point would it be smarter to just harvest what i have? Thanks in advance

leaves yellow before harvest. it's the plant drawing all the nutes out of the plant into the buds, if you are close to harvest you should have switched to just water anyway, you sound near

I am pretty close. I guess I just didn't think I was that close. A lot of the hairs aren't orange yet, I thought that was an indicator (3/4 are orange switch to water) but I'm new so I really don't know. Some of the smaller leaves coming out of the buds are starting to get small spots on them too. Think it is just cause I'm close to harvest?