Thought I would play last night and try this technique to get graded colours.
First you roll your yarn into a loose ball and cook it in kool aide.
The red I just squished the balls once in a while to help the dye go deeper into the ball.
The blue I rewound it so the blue was inside and redyed in green. I really like the results and it was fun and easy.
Too bad so dark in my room, I will take better pictures outside soon.