Darken compares the active layer to the underlying image and allows only those areas that are darker than that image to show up (Figures 13.10 to 13.12). It's that simple when you're working on grayscale images, but if you try the same mode out on a color image, you might be surprised by the result.
Figure 13.10. The top layer. (©2005 PhotoSpin, www.photospin.com)
Figure 13.11. The bottom layer. (© 2005 Stockbyte, www.stockbyte.com)
Figure 13.12. Result of using Darken mode on the top layer.
Color images are usually made up of ...