In the meantime, I found this very entertaining:

I enjoyed my previous dyeing experience a lot, so I might try this. I would first have to see if Kool-Aid is actually cheaper than my Wal-Mart dye (kidding!).
The real problem will be that you have to use wool, so I cannot use my beloved cheap cotton for a Kool-Aid dye along. But wait a minute, soy silk is a protein fiber, isn't it?