I hope this discussion isn't as frustrating for you as it is for me - I swear I'm nearly at the point of giving up on any communication with you at all. I feel as if nothing I've said has been understood.

Do you understand my distinction between the original meaning of greenness, and the derivative meaning of reflecting light at a certain wavelength? If you do understand that distinction, then how do you explain greenness in the original sense? Where is it, in your account of color?

I assume by "the original meaning of greenness" you describe a subjective experience (which I shall call greenp for convenience) and by light at a certain wavelength you describe an electromagnetic waveform of a particular sort (which I shall call greenw for convenience).

The usual cause of greenp is, naturally, the incidence of greenw on the color-sensing receptors in an eye. Said incidence causes certain behavior in the optic nerve influencing the operation of the remainder of the brain in a way not well understood (or at all understood, by me), but which through the methods of heterophenomenology may be deduced to cause certain effects in the mind which we refer to as greenp. Given what is known in the field of neuroscience, it is clear that the mind is to a large extent a product of the operation of the brain, much in the way that the videogame is to a large extent a product of the operation of the videogame console - the ambiguities lie purely in the extent to which I/O information should be included in the phenomenon. Thus, just as the appearance of a vehicle in the videogame is associated with certain patterns developing in the RAM of the videogame console, the appearance of greenp in the subjective experience of an observer is associated with certain patterns developing in the neural activations of the brain.

I apologize if I repeat myself, but I cannot reduce it any farther - I'm not a neuroscientist. Greenp is created by the operations of the brain, just as simulated vehicles are created by the operations of the videogame console.