For deeper colors, it is recommended to double the amount of dye used while keeping the water, dish soap, and vinegar the same.
The synthetic version is meant to dye specialty fabrics (polyester, acrylic, acetate)
The all purpose version is made to dye cotton, wool, and silk, as well as synthetics like nylon and rayon
You will have much better results using the all purpose, I promise!
I also recommend doing them all in one batch to ensure the same color. I bought a $15 large pot you’d boil seafood in.