You can add a layer mask to any type of layer or even to a multiple layers gathered in a group. To mask layer in Photoshop you simply have to be on that layer and press the Add Layer Mask button found on the layers tab. As you can see it adds a white layer mask meaning that the entire image is visible.
Accent Wall, Color, Color Consulting, Decorating, long narrow rooms, Paint, painted accent walls, Painting, what is the best wall for an accent wall. I think there are definite times when accent walls are great. I have used a darker wall at the end of a long, narrow room too with wonderful results.
Complementary colors, those opposite or nearly so on the color wheel, function as good accent colors in any room. An easy strategy to increase color flow is accent-color repetition. In each of several rooms you see a single repeated accent color.