The tops have been on for at least 3 months now. They are telling me the caulk is silicone based. One of the guys who has been out here to try the poultice from the installing company said the stone seems to not have been sealed properly and it sucked up the caulk. When they took off a side splash to show their bosses you could see that it soaked into the stone by almost 1/4 of an inch.
Yes - the kitchen is the same as the Giallo Ornamental link you provided. The bathroom with the same problem is Bahia Gold.
Here are pictures of bathroom.. Take note of the obvious line where the splash hits the countertop.