This is driving me crazy! Take a look at the attached screenshot. The light blue block of color is obviously somewhat transparent. But if you look at the layers palette to the right, the opacity is at 100%. The blending mode is "normal." What else could be causing it to be transparent? Thanks!
John, when would this approach be useful over using layer opacity of a layer mask? I remember a while back when we had a long thread about Displacement Maps, and you spoke about using colours as oposed to grey scale maps. So is this an area you are interested in?