I just dyed my hair with black cherry koolaid. Here's how I did it, plus before and after photos.
Get your things that you'll need. One packet of black cherry koolaid (more if you have thick hair), conditioner (I like to use plain white conditioner), a trash bag, a dark plastic cup, and some foil.
Line your bathroom sink with a small trash bag. I do this just as a precaution. Koolaid stains terribly. Now pour the koolaid into the cup and mix in some conditioner. I eye ball it. Even if you put too much, the dye should still workout. Put in a little at a time though just so you don't overdo it. Mix it up with a spoon.
Now part your hair in the middle, lean over the trash bag and place some of the mixture on the tips of your hair. Rinse off your hands (into the trash bag) and put foil on the hair. Wrap it up by folding neatly. Please don't crumble it. I've seen people do this. If you crumble the foil it will hurt when you try to take it off. Repeat these steps for the other side of the hair.
Now the tips of your hair should be in neat little rectangles of foil on each side of your face. It's time to clean up.
Throw out the trash bag and rinse out the cup. Be very careful not to splash koolaid on anything. If you get koolaid anywhere that it shouldn't be, clean it up fast before it can stain.
Wait for some time. I waited for an hour. You can wait longer if you want after seeing my results.
Rinse the hair until the water runs clean. Dry the hair off and look at your results.
This first photo is a zoomed up results photo.
Here is more like what the real color looks like.
I recently re-did this, except I dip dyed it and it turned out much better. You can click here to see the photos of my black cherry dip dye.