I have a RP frag I bought a few months ago, when I mounted it, a big chip of the bottom came off, it was sort of bare, with a few polyps. I shrugged and glued that piece about a cm to the side of the frag, about midway down, in good strong flow.
the "chip" has actually a nice green hue, but is not growing fast, while the frag has encrusted and has started to overgrow the chip, but the frag really has no green yet. I wish I would have glued the chip somewhere else!
that being said, it's a deep pink, but not a true "red", same color as Roberto's above.