What is the probability that a couple, both whom are AaBb, will have a child who is a blue-eyed taster?

With rare exception, human eye color is inherited as if a dominant allele (B) causes brown eyes and the corresponding recessive (b) causes blue eyes. Ability to taste the chemical phenyl-thio carbomide (PTC) is inherited with a dominant allele (A) causing the ability to taste with the corresponding recessive (a) causing inability to taste. The B,b and A, a genes ort independently