Why does the background color turn gray?
I can see the mask that I’ve created while I’m in Primatte’s interface. But when I apply Primatte to my image, I can’t see the any transparent pixels. Instead, I see gray pixels where my blue (or green) screen was. Most likely, you are working on a ‘Background’ layer that does not support transparency. You need to edit that layer to allow your Photoshop file to support transparency. You must do this BEFORE working with Primatte Chromakey 3.0. In Adobe Photoshop, you have ‘regular’ layers that are fully editable and support transparency. You may also have a single ‘Background’ layer that has a Lock icon. This is like a piece of paper that’s glued down. You need to unglue that Background layer. To do so, in your Photoshop Layers palette, double-click the Background layer. You will get a dialog box; just click the ‘OK’ button. Your layer now reads as ‘Layer 0’ instead of ‘Background’ and does not have a Lock icon. Now your Photoshop layer can support the transparency that Primatte needs.