If you want to dye polyester fabric, you need a specific dye for it - like Jaquard iDye poly. It will also color plastics and buttons!
Watch how I transform the shade of this dress into the perfect color for me.
Supplies (affiliate)
iDye Poly - I used the color Crimson https://amzn.to/431K5bh
Gloves https://amzn.to/4jXQQ3H