Which color is mentioned in the third verse of "Anchors Aweigh" as representing the Navy?

The correct answer is blue, as it is explicitly mentioned in the third verse of "Anchors Aweigh" to represent the Navy. In the context of naval tradition and symbolism, blue is often associated with the sea and the horizon, reflecting the Navy's vast maritime responsibilities. This color embodies the spirit, service, and dedication of naval personnel, reinforcing the identity and pride of the Navy. Other colors like red, gold, and green may have various meanings and associations, but in this particular verse, blue is clearly distinguished as the representative color of the Navy.