Recently, I've found many blog posts and videos of crafters dyeing 100% acrylic yarn using acrylic craft paints. I was skeptical of how this would work, but
Felting and Fiber Studio – Page 13 – An International Collective of Felt and Fiber Artists
Dyepot Weekly
Dyeing Acrylic Yarn With Hair Dye Part 2
Heart Like a Wheel: Spinning and Fibre Arts as Meditation Practice: October 2011
Dyepot Weekly
Dyeing Acrylic Yarn with Glow in the Dark Fabric Paint
Tea with Shira #11 Rit Dye Made Especially for Acrylic Yarns
Yarn Dye with Pickled Beets
AmphibiaKnits
beesybee - Canada
📌Last Chance to ACCESS the🪻Anthotype Plant Dye Tutorial in ✨A Year
Make.Do.Dye – knitorious