The Layer color effect is simple and is the one that I use the most in my day-to-day artwork. Here's an example of the layer color effect at work in the following screenshot, using our photo of the tower again:
The Layer color option takes the contents of the selected layer and tints them based on the color set by the user in the Layer color selection box. By default, this is set to a light blue color that is reminiscent of non-photo blue pencils from traditional comic techniques. This is a non-destructive way to tint our layer, as we can simply click on the Layer color icon again to change the layer back to its original colors. ...
