Fill a bowl with hot water and soak the protein-based yarn in it for 30 minutes.
Mix one package of Kool-Aid with a solution that is one part white vinegar to three parts water in a bowl. The more liquid you add to the package of Kool-Aid, the lighter the color will be. Use 1 package of Kool-Aid for every ounce of wool.
Remove the yarn from the hot water and squeeze out all the excess water.
Spread a large sheet of plastic wrap in the sink and place the yarn on the plastic wrap.
Pour the Kool-Aid, water and vinegar mixture over the fiber slowly, saturating it as thoroughly as possible.
Roll plastic wrap up, covering the yarn completely.
Secure the plastic to the yarn by wrapping masking tape around the plastic.
Place the plastic-wrapped yarn into a Pyrex bowl.
Place the Pyrex bowl in the microwave and heat it on high for two minutes.
Remove the Pyrex bowl from the microwave and allow it to sit for two minutes.
Squeeze the plastic-wrapped yarn lightly to more evenly distribute the dye.
Place the plastic-wrapped yarn back in the Pyrex container and place the Pyrex container back in the microwave, heating it on high again for two minutes.
Remove the Pyrex bowl from the microwave and allow it to sit for two minutes.
Remove the yarn from the plastic wrap and rinse it out in lukewarm water.
Hang the yarn up to air dry.