When Gabby and Grandma get together, "Green Day" means "Fun Day." From sewing their own cloth bags and buying vegetables at the Farmers' Market to recycling their bottles, these two know how to have a good time while doing good things for the earth. The illustrations in Monica Wellington's popsicle-bright palette-enhanced with myriad shades of green-result in a perfectly "green" addition to her books for the very young.