Koolaid is pretty lethal...
I'm not stupid to try to change the color of my contacts or put them into my eyes...
But I've tried dyeing my hair with koolaid (the unsweetened packages, mind you)... and it stinged! Oww.. I was trying to turn my hair purple. ANd it worked, but it bleed, and lasted until my next shower.
It was something I did for Halloween.