Yep, Wheaten birds as well as Salmon (Faverolles) all hatch yellow. The males feather out very dark or black, while the pullets are tan, buff or reddish. I hatched a batch of both over the summer. They all hatched totally yellow. I could start to tell at 2 weeks which were cockerels and...
Cute chick though! If it is a wheaten, you'll be able to determine gender around 2-3 weeks. The pullets will be brown/red and the cockerels will start to grow in black feathers.