Adobe Illustrator offers a simple tool to quickly apply colors, strokes, fills, effects, change fonts, and more to every item on a layer at once. The Target icon, the little round icon displayed at the far right of each individual layer in the Layers panel, is used to select every item on the layer. Click the circular Target icon, then apply a stroke, change a color, or apply a style to all the objects on the layer. This can be particularly useful if you organize your Illustrator documents as I do, putting all type on separate layers, backgrounds on another layer, etc.
