What is the purpose of saving selections?
Describe one way to isolate color adjustments to an image.
Describe one way to remove color from a selection or from an image for a grayscale effect.
By saving a selection, you can create and reuse time-consuming selections and uniformly select artwork in an image. You can also combine selections or create new selections by adding to or subtracting from existing selections.
You can use adjustment layers to try out color changes before applying them permanently to a layer.
You can choose Image > Adjustments > Desaturate to desaturate, or remove the color, from a selection.