A rose whose petals change colour to match the emotions of the person holding it, given to Deanna Troi by her intended husband Wyatt Miller in Haven.
The chameleon rose is a flower that alters its colour according to the mood of whoever holds it.
It appears in The Next Generation episode Haven, set in 2364. Deanna Troi has been promised since childhood to Wyatt Miller, the son of her late father's friends, and the two meet for the first time aboard the Enterprise-D. Wyatt, a young doctor, presents her with a chameleon rose as a gift, and the flower shifts through several shades as she takes it.
The arranged wedding never takes place. Wyatt has dreamed all his life of a woman who turns out to be Ariana, a survivor on a Tarellian plague ship, and he leaves to join her people. The rose is a prop in the series' first Lwaxana Troi story.