would it be ok to dye a guinea pig’s hair with food coloring or kool-aid?

I don’t want CHEMICALS or KOOL-AID!!!!!!!!!!
Like can I mix it with conditioner or something?
I want blue edges in my hair!

I want to dye my hair green for St Patrick’s Day tomorrow. All I have to dye it with is green food coloring. Will it work if I just mix a couple drops into my shampoo? Otherwise, how should I do it?
I’ve tried kool-aid and it just won’t stay in my hair! A friend in high school used to use food coloring to dye his hair and he’d do liberty spikes and such…I only need it for a day, and my hair is fairly light-colored.