Yep! you have a trans cooler leak inside the radiator. Antifreeze is mixing with tranny fluid. You need to either replace the radiator (or get it fixed) or you can disconnect the factory cooler lines and install a aftermarket trans cooler. You will need to flush everything out (trans., lines and cooling system) and don't forget to plug the cooler line fittings in the radiator if you put an external cooler on. The transmission might be ok if you caught it quick and flush everything properly. tmm