As you can see by these pictures, I've got some odd things happening. I'm not worried at all though- I have a decisive plan to fix it.
First of all, discoloration is not happening on the budsite leaves...only the leaves without bud.
One of the plants had dark, dark green leaves and is now transitioning to normal colored green leaves (I moved it's placement in the tent...it's the "runt" of the litter and should have been under the bulb more directly). This is pretty cool to watch.
There is some browning of the tips, yellowing as well, and curling upwards, which suggests either heat burn or nute burn. I've been having minor heat burns on another plant (before I rotated it) so I have a plan in mind- add a fan clipped onto the bottom of the ballast blowing air across the direct area beneath the ballast. An added fan on the ballast will definitely help this minor problem.
As a poster in my help thread brought to my attention, I haven't flushed my plants at all, since seedling. Didn't really occur to me that they might need this. So tonight and probably again tomorrow, I'm flushing by pouring straight water into the plants respective pots. Tomorrow I'll do water pH'ed to 5.5. Hopefully this improves the health of my random foliage.
The only other thing I envision this being is a pH problem. I've let my res. slide anywhere from 5.5-6.5pH, and I'm going to be more strict now...I want it at about 5.5-5.8 to start, we'll see how that goes.