Ghosts from the garden

I carved my halloween watermelon today. It got this job a few weeks ago when I cut open its sister watermelon and discovered mostly white flesh - due to my eagerness I had cut it off the vine way before it was ripe.
So fast forward to now, and what do I find but some pretty dark pink flesh only 1/2 inch under the skin! Well, I carved it anyways and if no one steals/smashes it tonight I'll cut it open properly tomorrow...
There's no light inside, the flash in the photo just caught it in a contrasty way that shows it well.