Green Sand!

That's the first thing most visitor's say when the sandbox opens at our house. I never really think of it as being green until someone mentions it that hasn't seen it before. I always wonder how much sand goes home with our playmates each time we play.It get's dumped out onto shoes, flipped into hair and face. Hands are caked with green crystals if the sand has gotten wet. The sand is slowing diminishing. Do you think it will last the rest of our time here in Ithaca?