Driftwood - This simple, neutral color could be exactly what your next project needs. Driftwood is a mid-tone, stone gray that's a blend of earthy hues with a masculine touch. General Finishes Milk Paint is a premium water based interior/exterior acrylic paint formulated with Zero VOC Colorants. Named for its flat, low-luster sheen and premixed for your convenience; it is now available in 33 colors.