Color blending with Blend modes
The last stop on our coloring journey gives us tools that normally one would use photo-editing software such as GIMP or Photoshop to do. Say, for example, we have a group of shapes or a picture that we’d really like to make grayscale. For the shapes, we could just re-color them but this may prove quite tedious across many shapes with gradients, and for the photo, we have just a bunch of pixels to deal with.
Fortunately, we can do as we desire using a white rectangle and changing the blending mode to Saturation. If we put this rectangle over our picture and shapes, you can see where it sucks all the color out of those areas in Figure 8.37.
Figure 8.37 – Changing the Blend mode on a rectangle from Normal to Saturation
The Saturation blending mode takes the color of the square and makes the objects under it the same saturation level. It doesn’t have to be a flat color, however. For example, we can use...