And here is where my NaNo 2010 novel,
Faded, gets its name. This is the intriguing bit of cobha on my parallel world (Erde) that I think makes the book. Opinions greatly desired...
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"FADING" PREMISEErde has one very simple and pivotal rule of cobha – everything fades as it ages. Like human hair in our world gradually turns white or gray in old age, so everything in Erde gradually fade into grayscale, usually white. Literally everything, living and non, is affected by this premise. Rocks, fabrics, foods, human skin – nothing is exempt from this cobha.
This fading is gradual. Objects turn a paler shade of their color before going grayscale, and most objects end up pure white at their end. In humans and other sentient beings, the eyes are the last thing to lose color; there are no naturally gray-eyed people in Erde. The rate of fading is regular, making color a relatively consistent judge of age in Erde. People and things that have color are fresh, young, and strong; those that are faded are weakened, old, and dying.
While some objects fade quickly (such as bread) and others fade very slowly (such as rocks), all objects are generally affected by the fading in the same way. Mold, rust, burns, and other chemical damage will result in hastened whitening; the object will fade in the affected area as opposed to becoming scorched, rusted, etc. However, an object will not fade if it is merely torn or broken. (Think the difference between chemical change and physical change.) Similarly, living beings will fade rapidly if injured or ill, depending on the severity and permanence of the damage; if a person heals from an injury, they will not fade significantly as a result from it.
The one major exception lies with sudden death. If a living being dies without warning, they will go white instantly. Color is not an immunity or a guarantee of immorality.