All five eggs have now hatched! I think I confused the silvery chick for blues, and they are in fact splash. And one of the ones I thought was black is blue instead. lol
So, final count appears to be two blues, two splash, and one black!
The humidity had gotten very low overnight and one of the chicks was having a hard time of it. It was halfway zipped but couldn't seem to get any further, and I've hatched enough by now to know that once they are at that point it usually goes fast. In fact, after I bumped the humidity back up, the final egg which only had a bit of pipping instantly started to zip.
I helped out the stuck chick by cracking the shell along the same line as the zip and once that was done it popped out on it's own within moments, followed seconds later by the last chick.
OEGB babies are so tiny!!!