subliminal color images

[Kragen Javier Sitaker]

On Mon, 16 Oct 2006 13:06:58 -0700, Benjamin C. Wiley Sittler wrote:
> why not support the classic engraving marks? that way cellphone + old
> book/reproduction = color engraving.
> http://en.wikipedia.org/wiki/Tincture_(heraldry)

It's a clever idea, although of course you need to extend them to
cover a continuous chroma space --- Dave's suggestion sounds good.