Baby Nursery

Baby Nursery ideas- Does anyone have any ideas on which colors to add and how to add color to a plain grey and white nursery for a boy? I am drawing a blank! We will have animal photos on one wall which will offer some color (yellow duck, pink pig etc) but I don't know what color curtains to put up or what color to do his name above his crib. Also thinking of doing a cool DIY mobile above his crib but have no ideas. My husband says it's so plain and that our son will be dull with nothing to look at lol. Please send some ideas or photos of yours.