Alice and Greta are two witches with very different world views. Alice"s sweetness is like a splinter under rabble-rouser Greta"s skin. Never content to live and let live, and stubbornly forgetful of her previous comeuppances (as seen in Alice and Greta and Greta"s Revenge), Greta decides to stir up a batch of trouble. In a truly diabolical stroke of genius, she remembers that Alice loves colorful things: her turquoise and pink pet butterfly, red apples, the blue sky, orange balloons... Greta waves her wand and casts a spell to remove the colors from the world--all except the yucky green that she herself favors. Of course, Greta has forgotten that even nice witches know how to get revenge, and soon the tables are turned. But then both witches go too far, and discover the risks of invoking an eye for an eye, a tooth for a tooth. For once, though, naughty Greta seems to show honest remorse for her part in the calamity. Has she really turned over a new leaf? Steven J. Simmons and Cyd Moore team up again to produce another entertaining tale about these worlds-apart witches. Moore"s swirly watercolors help bring home Simmons"s point about the value of diversity. Young readers will get the message, but mostly they"ll just enjoy the mostly predictable yet pleasing plot. (Ages 5 to 8) --Emilie Coulter