[MrRubix]

Keep in mind that the human mind has evolved to view reality a certain way.

The apple is red only because we see it as red. We've evolved the ability to see a particular section of the electromagnetic spectrum because it serves some useful purpose to our survival. The apple is red insofar as it reflects a certain wavelength of that spectrum.

Bees, for instance, are able to see ultraviolet light in a way that we cannot. Some species of fish can see infrared. There's no question about the underlying causes of things like "color" -- the question is how it is interpreted as information.