It's easy to see why the idea of a coloring book explaining road development would have so much appeal to those at William A. Hazel Inc. {Metro, Jan. 16}. Who doubts that kids would want to spend hours filling in the outlines of trees as they're loaded into dump trucks for delivery to some landfill? Now, that's fun!

But if the Hazel people really want to give the kids of this area a thrill, why don't they gather up bus loads of them and take them for a field trip to see what actually happens as roads are planned and built?

The kiddies could sit in on presentations before community groups in which attorneys and traffic engineers representing developers threaten the kids' parents with visions of the dark days ahead if they act to block the developers' much-needed roads. Then the boys and girls could go to a county board meeting where the board members make impassioned speeches on the need for new roads even as they approve more new developments.

Finally, the kids could go see a new road actually being built. They could watch the bulldozers plow down trees. They could hear the trees crash to the ground. They could look on as the displaced birds, squirrels and other wildlife run or fly away, with fewer and fewer places to call home.

Best of all, our children would get a chance to see where all these new roads really lead. As the last trees fell, and the last asphalt was laid, the kids would discover, as many of us have already, that the roads lead not -- as Hazel and other developers would have them believe -- "to grandmas and grandpas . . . to the ocean . . . to camping . . . or to a picnic," but to the latest office park!

Gee, that doesn't sound like much fun. Maybe that's why Hazel settled on coloring books. ALLAN L'ETOILE Sterling