so to end the mystery which seems to be turning off-color to yellow/brown...... as many/most suspected it turns out to be condensate from the compressor. After sticking a small lid under the car and collecting forensic samples for 4 days, periodically emptying them into a clear plastic empty water bottle so they wouldn't get contaminated by local showers, it is clear that it was clear, not the blue of w/w cleaner, or the yellow/brown of other emissions.
What was interesting to me was the communication process......what I learned is that effective problem solving needs several things:
1) the problem giver needs to spill all the beans, thoughts, critiques and
2) the problems solvers need to be mind readers or fill in gaps.
Although I suspected from the beginning that it was condensate, I was skeptical because the A/C wasn't turned on , at least not intentionally, which I stated. Most problems solvers came up w/ the defroster using the A/C which turned out to be the correct solution. However, though I may never have explicitly stated it, I doubted that theory because the A/C wasn't turned on because this Camry doesn't have climate control w/ temp settings like my 2006 Subaru (where the A/C light comes on when the defrost button
is pushed). Had I explicitly stated the reason for my doubt, probably many would have pointed (as Alan finally did....the ah ha ! moment) that the A/C works in the background w/o the light coming on (a poor design feature in my opinion).
......so to me, that conversation was valuable for the future both as problem giver and solver. The giver needs to tell all and the solver needs to realize that passive resistance may be taking place so needs to keep poking to find out what giver is really thinking. Thanks to all who contributed.