Bake 1 (16½-oz) package refrigerated sugar cookie dough according to package directions. Cool completely. In a medium bowl, combine 2 cups powdered sugar and a pinch of salt; stir in 3 Tbsp warm water and 1 tsp lemon juice. Stir in yellow food coloring, a few drops at a time, to tint icing bright yellow. Spread icing on flat sides of cookies, covering them from one-eighth to almost completely. Freeze 10 minutes or until set. In a medium bowl, combine 2 cups powdered sugar, 2 Tbsp unsweetened cocoa powder and 3 Tbsp warm water. Spread chocolate icing on un-iced portions of cookies to represent moon covering sun. Refrigerate 5 minutes or until icing is set. Makes 2 dozen.