You will need:
Several different watercolors or water-based acrylic paints.
About a dozen worms of different shapes and sizes.
Canvas or watercolor paper.
Dip a worm completely in one color of paint. Drop the worm onto the paper and let it wiggle around a bit. Do this with another worm and another color. You can remove the worms after each color and let that color dry a bit before dropping the next worm or drop the worm with the next color onto the paper while the last color is still wet and allow them to mix. You decide. When you're finished with the worms, wash them off and return them to the bin.
The final picture will be a definite conversation piece !
Taken from the book "The Worm Book" by Loren Nancarrow and Janet Hogan Taylor.