Well this is making me paranoid about buying one of their newly redesigned MacBook Pros towards the latter half of this year, perhaps I should hold off until all the faults have been identified and ironed out.
On the one hand you have to applaud Apple for supporting hardware issues well past where any standard warranty would cover it, however on the other hand Apple has had quiet a few hardware issues due to the way they design things, and sometimes trying to get them to acknowledge the problem is their fault is like getting blood out of a stone.
Those little moisture dots inside their laptops can change colour if the air happens to be humid, you don't need to have spilt anything on your MacBook, but once they've changed colour you've had it.