Here's the update!
It's pretty crowded in there now, and they all started grabbing with their leaf tips, as they do, so it's harder to get good pics.
So as you can see they grown a fair bit, the odd one only made that wicked deep purple up a few nodes.
There's still more bits of purple on it, that aren't on the other plants, especially the midrib of each leaf is quite purple underneath, I couldn't get a pic of that.
There's also a pattern on the leaves, all the plants in this pot have blotchy chlorotic look to them, I'm not sure if it's normal for the species, but these are all like that. It's a random pattern but the essentially all the leaves look the same.
On the odd plant, it's still blotchy but the pattern runs down the veins, giving less of a random pattern and more like lateral striations.
On the odd plant, it's leaves are much thinner, more pinnate than the
Normal plants, and seem to be more steeply folded along the midrib.
I'm not sure how many of those details will be visible from the pics.
More obvious is the fact that this is the tallest and by far the thickest stem in the pot, despite emerging several weeks later!
I'll edit in more details soon! And add captions for the pics to help clarify
Thanks for looking!
Oh, you might notice a small alocasia in the pot too, that was the other new spike that I mentioned in the first post, the green one with a little color on it... Clearly I misidentified that... Funny since I thought this purple character might be a stray aroid...