How to paint a Martian base without Martian Ironearth or Martian Ironcrust? It's almost impossible to find a tutorial online on how to paint a Martian base without using Games Workshop's Martian Ironearth and Martian Ironcrust texture paints. So I worked out my own recipe for that cracked red Mars terrain look, using paints you probably already own. Hope it's useful to some of you.