The Blue Ombre was a head item in Club Penguin. It costed 200 coins in the Penguin Style catalog, and only members could've bought it. Similar items were The Lavender Ombre and The Rose Ombre. OmbrÃ© refers to a gradual blending of one color to another, similar to gradience.
Lechuguilla Cave is located in Carlsbad Caverns National Park, New Mexico. It formed between four and seven million years ago through hypogenic speleogenesis [1].
Blue Hole: The Blue Hole is situated about 80km east of Belize City and is close to Lighthouse Reef. Made famous by Jacques Cousteau, the Blue Hole is now a protected natural monument. From the air, you can see the depth of the water (135m) through the change in color from turquoise to deep azure blue.