I stopped by at the same shop I bought the blue hair dye from to get a nice, safe brown to cover up the oddly green tint it had become. The Persian woman who owns the store talked me into letting her bleach the green out before I dyed it any other color - she even agreed to a very modest charge.
Unfortunately, all the color in my hair bleached out, except for the green dye. So now I have a color that surely only anime elves would normally have - a strange sort of shiny, platinum, green color. Minty.
I got some brown dye, but I'll leave it like this for a little while, at least.