I wonder at what point we will start assuming things are clean and green, environmentally friendly, and change over to labelling harmful items with a warning. A lot of companies and products these days are trying to project a "green" image, so much so that it's expected. So before long it won't be remarkable or boast-worthy any more, it will be the norm to expect products to be recyclable and made from recycled materials. At that point we switch from proudly displaying the fact that such-and-such is the greenest product or company around to pointing out those that are not.
Mokalus of Borg
PS - At that point, progress would have to accelerate.
PPS - Because nobody wants the "WARNING: TOXIC" sticker on their product.