I have a candidate male for this female when she is ready for chicks. But I couldn't find much info about two yellowfaces' chicks. The male in the photos below is i think yf type 2?? like female budgie. Also could you tell me about possible body colour expectations?
I think that male is a yellow face opaline sky blue. I don't think he is type two, because his wings are white rather than yellow.
As for expectations, it depends on what the DF spangle is hiding and if she is split to anything. But I think you'd find yourself with all yellowface spangle blue chicks. The boys would be split for opaline and the girls would be opaline.
Your hen is a DF Spangle so all the babies will be spangles. Both birds YF - all the babies will be YF - if they are of the same type (I think so). Both birds are blue - all the babies will be blue. Your **** is an Opaline - all the hens will be Opaline. Put it all together and you might get a YF blue spangle Opaline - a very lovrly bird.
The male budgie's body colour seems like sea-green and that is why i think he may be a yellow face type 2. (I added the photo again below). Yf type 2, blue, spangle, opaline; as Dries said, that is what I expect when they give chicks. Not rainbows exactly but they may look like them.