Well, it's the best because of its unique and terrifying concept. The idea of a strange, unknowable color from outer space that corrupts everything it touches is both fascinating and deeply disturbing. It creates an atmosphere of dread that is hard to match in other stories.
The way it messes with the reader's mind. It's not just about the spooky events, but how it makes you think about the vastness of the universe and the things that could be out there that we can't understand. It's this psychological aspect that sets it apart.
Colour also helps in characterisation. A character might be associated with a particular colour throughout the graphic novel. This colour can give clues about their personality. For instance, a character dressed in black all the time could be seen as brooding or mysterious. It also differentiates characters from one another visually.
One famous quote from 'The Colour Purple' is 'I think it pisses God off if you walk by the color purple in a field somewhere and don't notice it.' This quote emphasizes the importance of noticing and appreciating the beauty in the world around us.