Any feedback on their acid dye or their direct dye (the direct is for cotton). Their method seems so much easier than Procion MX for cotton dyeing-no need for synthrapol, soda ash, urea, etc. Just 4 oz of salt and vinegar to set the color. I've bought yarn from those who used the acid dyes and some just sprinkle it on-I am looking for feedback on Direct Dye and colorfastness, etc. Anyone out there???????