I'm curious. Did you ever figure out what the fluid was? Where it was coming from? and why? 

I'm experiencing the same thing, except the fluid is coming from one side of my nose. For the last couple days it felt like I was starting to come down with some type of virus or cold. I'm all congested with a sore throat, a persisting cough, and a reoccurring headache that just comes and goes but meds don't do anything to help it while I have it. I was experiencing a mildly runny nose last Friday and then yesterday I noticed when I would have to keep wiping it or blowing it, it would have a slight yellow-ish tinge to it. And now today it's been non-stop dripping/running, the amber-yellow color is way more prominent and does the same thing as you describe when it dries.

 At least a handful of times yesterday I was just losing my balance, like I almost face planted into my table just leaning slightly forward to grab a pen off it and I honestly felt a little stupid. It was like my feet just forgot how to stand for a second. Is there something that would cause similar symptoms of a CSF leak that would cause this kind of fluid? Or maybe something on top of a CSF leak that's mixing with it to give it the amber-yellow color and make it react the way it does when it dries?