What: “I wasn't always this color!” bronze trophy
When: During Year Three (The Pearl)
Where: Shipwreck of the Limbo
Immediately after sinking the Lola, you and Glottis will wind up on the bottom of the ocean. A strange individual will start walking up to you after a while. Strike up a conversation with him and exhaust all of your conversation topics with him. While he'll prove no help whatsoever in leading you out of the location you find yourself in, you'll come to find out that he has been down here for quite a while.
As with all of the other conversation trophies, if you don't ask the right questions before proceeding with progression, you can miss this trophy.