5. Ethereal Watercolor Washes For a soft, artistic, and dreamy finish, the watercolor wash technique diffuses colors seamlessly into one another. Wet the terracotta pot slightly before applying highly diluted acrylic paints in shades of seafoam green, soft blue, and lilac. Allow the pigments to bleed and run naturally down the curves of the pot, creating an organic, cloud-like texture that pairs beautifully with delicate ferns or airy asparagus grass.