pinkish would probably mean it's transmission fluid. Possibly leaking from the line that goes into the bottom of the radiator.
I have a fluid leak from under the front end. Didn't appear until the car was about 3 weeks old. It was bad at first but now it drips after the car had been driven for 15 min or so. It looks like it is under the radiator but the fluid color is pinkish and is slick to the touch as in organic fluid. Haven't had it to the dealer yet.
Sounds like the same issue I had. Transmission cooler was leaking at the fitting. It was cross threaded at the factory. It took three days for the dealer to get the part as it shipped from California.