... vertically, type a negative Height value.A. Width 100 , Height 100 B. Width - 100 , Height 100 C. Width 100 , Height - 100 D. Width - 100 , Height - 100 Setting layer opacityBy default, a layer is displayed ... 21, 200 1 12: 05 PM3UG.book Page 91 Wednesday, February 21, 200 1 12: 05 PM129ADOBE AFTER EFFECTS 5. 0 User GuideTo change an existing layer into an adjustment layer: 1 In the Timeline window, ... February 21, 200 1 12: 05 PMUG.book Page 92 Wednesday, February 21, 200 1 12: 05 PM137ADOBE AFTER EFFECTS 5. 0 User GuideTo change a color label for an individual layer:1 In the Timeline window, select...