The parents of this clutch of four babies are a Rosy Bourke hen and a lovely Lutino father who looks like three of these...
Because color is sex-linked in Bourke parakeets, I'd guess the normal coloration will be a male through the hen and the lutino's will be females from their father. However, admittedly I've never raised lutino's and haven't investigated their genetics.
With a mixed pair of one rosy and one normal, it has always held true that hens looked like their father and cocks looked like their mother.
An exception to this was a normal pair I owned who threw rosy hens. This was because the normal male's father was a rosy, making him a split (half & half), or heterozygous for color. I'm an amateur at bird genetics, but am fascinated by it. Smile.
Have you seen the completely red African Gray parrot? He's amazing. Here is a link to my post on it.