Can't help you, but I'll be interested to know.

While informative people are weighing in, I was checking out Hula Girl on Ebay and was very curious about the fact that it is actually supposed to glow, they described it as a lit firecracker. Can anyone verify or describe better?

I had Keiki a while back in 2003. It grew well but because my growing temps during the summer were cool it looked pinkish mauve, not purple lavender. Like a lot of the lavenders and purples you need a lot of sun and heat. JL Metallica or Purple Jack even in cooler temps looks pinkish lavender, def more lavender purple then Keiki.