By overlapping and partially blending several colors of Venetian plaster, you can create complex designs reminiscent of paintings created with stiff paint and a spatula.

The three colors used here considerably contrast, but the technique could also be done with different tints of a single color.

Remember that mixing colors that are opposite each other on the color wheel results in gray. So the more contrast in the colors you select, the less you should blend them on the wall if you don't want to make the colors muddy. Use a light touch. This project uses acrylic Venetian plaster. Products vary by manufacturer, so be sure to read the label and prepare the surface properly.

Though the finish looks complex, it’s easier to create than a single-color, polished one. You don’t have to sand or smooth the plaster, just trowel it on. But because the pattern is random, you’ll need to step back occasionally to make sure the overall effect stays consistent.