Jim Choate wrote:

This suggestion is unworkable in application.

Why the focus on color, the easiest thing to avoid using, or layers, ditto? Superfluous for serious CAD, these dainty decorations from Martha Stewartville. Most messages could be concealed in "hatched" objects, bit-bloated as they are, indistinguishable from the elements used to hatch. All black and white; maybe a dot of red for cashmere dupe. In fact, CAD is so bloated with dumb cad-jockey features, and sleazebag work-monitoring logs, it puts most ordinary programs (even air-boss MS) to shame, and could hide a herd of rustled Mex longhorns as easily as the Bush family hides dryhole oil reserves, without any more trickery than sandpapering new boots to look worn. Anyway, Jim, I gather from your remarks that you've not fiddled for endless low-paid months and years to figure out how to cheat the evil bosses and automatic work-snoop feature, while onion-siphoning the Net for horny fare under guise of urgent file transfer to foam-mouth ne'erpays. Underground (so to speak) swapping of digital work avoidance tips is a huge use of global bandwidth riding on the backs of big fat docs for globular structures for maggoty thugs. (Although not nearly as gigantic as the porn trade stego-supporting Net infrastructre growth -- over 50% of Net traffic and rocketing.) Who knows how much illicit info is riding the porn river in and out of the most secure sanctums of tyrants?