Boy this one is really close.
My gut instinct is to say "Vanilla" instantly. BUT that is because my own fire babies were BRIGHT yellow when they hatched. However, I know not many of them are that bright at birth, a lot are much darker yellow to orangeish when they hatch.
It also makes things more difficult that your vanilla has so much blushing. Normally the "fire blushing" is the giveaway in babies. But with yours, you can't use the blushing because your vanilla has so much.
How old are these guys? How many sheds have they had? Generally speaking, the older they get and the more sheds they have, the easier it gets to say which is which.
After spending some time studying the pictures, and going back through pictures of my own babies. I am leaning towards them being vanilla. I can't say just why, it's really kind of a combination of things, but yes, I think they are vanilla.
Now, if it is possible to keep them for a few more sheds, it should be much easier to say with confidence what they are.
Gale