I don't have my camera now to take pictures of the chicks, but the dad is a normal sky blue split for opaline and recessive pied (and God knows what else) and the mom is a normal light green split for recessive pied.
I'm pretty sure that the first chick is a recessive pied because its little pinnies are coming in yellow and its body is mostly pink with some dark patches here and there. And the tail pinnies are yellow with a couple of black ones.
The second and third chicks have a very organized pattern of dark spots on their skin and overall are much darker than the first.
Outcomes for normal sky blue/opaline & rp **** bird x normal light green/rp hen:
100% of the chicks will be light green split to blue.
If the hen is split to blue, then 50% will be light green split to blue and 50% will be sky blue.
25% will be normal, 50% will be normal split to recessive pied, and 25% will be recessive pied.
50% of the male chicks will be normal and 50% will be normal split to opaline.
50% of the female chicks will be normal and 50% will be opaline.
Since I'm not a breeder -- I've only bred my budgies casually a few times -- all I can tell you is your first chick will be light green due to yellow pinnies. My blue series recessive pied chicks all had white down; I've never bred any green budgies.