I'm betting it was your Neocaridina. Neos take a while to develop color, especially blues in my time keeping them. Blue Neo shrimp often throw wild types that never color up. Here are some of mine from earlier this year, every single adult was a great blue. Look closely around the adult, the offspring blend in with Flourite really well.

 

I have a bright red juvenile that popped up in my tank the last few days in a group of wild-type neocardina ( all began brown or clearish).
Im like "Where did you come from pretty one?."
For me, half of the joy in this tank is the color throw-offs. But, that is because I am not looking for consistency --- but wild.

 

That's good to know... I have what I think are some great looking blues but with having both Rili and the Blue Velvet shrimp I was thinking they may have some wild types or some really weird colors.

Any how, I do have a thread with pictures of my blues located here... https://www.plantedtank.net/forums/88-shrimp-other-invertebrates/1295701-my-shrimp.html

Hope the fry will color up soon.

 

Probably neocaridina. Our blue velvets threw black with orange eyes, clear, milky blue, and blue velvet in almost equal proportions.
Neos also take a while to color up, so I wouldn't cull until the shrimp grow some.

 

It's been my experience that all baby neo shrimp are pretty much milky white/clear-ish. I had some Ghosties once and the babies were half grown by the time that I found them. I believe that the Ghosties go through a larval stage after hatching. You would need a really mature tank with lots of micro eats for the larvae. I currently keep six different neo varieties and they all have babies like you have described. The color comes later and gets better as the shrimp age. I kinda miss my ghost shrimp, their antics at dinner time were great fun to watch. They like to steal each others food and lots of scuffles break out with the temporary victor swimming away for dear life while others are chasing. Maybe they are related to seagulls-"Mine! Mine! Mine!"