A royal purple phone is neither cool or uncool; it's just different. Something that is said to be cool displays all four key traits that are identified as distinguishing something as cool. Those four traits are social perception, relativity, positive attribution and divergence from the norm, according to behavioral scientists.
Social perception is how a person or group feel about an item or idea. Relativity is the concept of employing localized comparison or rating something against something similar. Universally, for something to be cool, it is viewed in a positive way. Things that diverge from the norm, but not in an extreme way, are considered cool. All four characteristics must be present for something to be cool.