| | I did it! Black elastic!
You HAVE to do it on the stove. Fill a pot, bring to a boil. add powder (be careful, makes a mess!) Let it boil long enough for powder to dissolve and then dump the elastic in the pot. Let it boil for a minute or so, then turn on simmer and let it go for a bit. Well see how it turns out when I take it out and dry it!