Hi there Lloyd:
Check this out... here's a recipe for how to make your own clay paint from three simple ingredients.
Clay paint can be used on a variety of surfaces, including drywall. That means you can easily give very standard interior walls a distinctive earthen texture and appearance. It looks really great -- I just finished a wall in the bathroom here.
Brian 'Ziggy' Liloia
Natural Building Workshops & more at The Year of Mud