Josiah, you won't really be "dyeing" the flower
... as the flower
drinks the colored water (through the stem) the coloring is drawn up into the petals.
I'm not real sure if this method will work on roses
either, but I'm sure curious as to whether or not it will work, so keep us posted please! (If I'm not mistaken, I believe that "woody" stems, such as those of roses
, will draw the water better if you crush the stem at the end before placing it in the water.)
You had asked if coloring a rose
will kill it... my answer to that is, not if you use food coloring, or a non-toxic coloring, such as those that come in kid's water color paints. I don't think that shoe polish would be a very good idea... <i>but who the heck even uses that stuff these days?
it might be an interesting story, so if you'd care to share, I'm sure we'd all enjoy hearing it. (You just might start a fad around here!)