Not really, but made you look! Maybe. I found the Stringativity Blog and wanted to share it with my fellow 'Puffs. The Blogger in question posts about her experiments with Jello on 12/09/2007. She even posts a follow up pic in the post dated 12/14/2007 - so you can see what a jello swatch looks like once its been knitted up.
Jello in the microwave from http://stringativity.blogspot.com/
In a mixing bowl in the order listed:
5 cups water
1 tsp salt
1 pkg regular Jello Berry Blue (color used in the example)
1 cup vinegar.
81 grams of wool
Add wool and swish it around a bit allowing the dye to soak in. Stir with a utensil unless you like the look of colored hands.
You will need a microwaveable bowl. Place jello soaked yarn in bowl and microwave for about 2 minutes on high heat. Allow it rest a bit to cool. Repeat 3 times.
Their is a bit more - the rest of it can be found on the Stringativity blog. A place I am pointing to as it is an amazing blog.