Boys first Communion outfit

I know this isn't something that needs to be, he could wear anything. However I got his older sisters pretty white dresses that suited them and I feel like I would be a terrible mom if I did not do the same for my boy. But the idea of putting him in white unnerves me a bit.

He is the only boy in his Communion class, how out of place would he look if I found a light blue? Or tan?