Description: A bath additive
Main Pitch: "Turn water into a squishy (red, pink, green or blue) goo"
Main Offer: $19.99 for two bath's worth
Bonus: Double the offer free
Prediction: Unlikely to succeed
Based on what I know about kids' DRTV (not a lot), this doesn't have the play value (or value, period) to take off. It's more of a novelty.
Now if it were flavored and maybe marketed toward fraternities and sororities ...