Food coloring can be used to dye rovings and yarn and its much much cheaper than kool aid. I got a box of four colors at AC Moore for about 2 bucks. You just need to add some vinegar to your dye liquid to aid in the chemical process.
The roving looks really pretty, even without bright colors
I've heard all these recommendations for Wilton dyes...where do you buy them? I can't find them anywhere.
wilton dyes are actually food color gels/paste. they work better than regulaer food color liquids because they are concentrated. i usualy buy mine from wal-mart for less then $2. i have about 7 or so colors. they mix well and dye very vibrantly