Beau Miller Smith is really really lovely. Strong, not overly common. When I skimmed over your post I actually thought Winter Blue was for a girl, so I do think it may be a bit feminine.
Just a thought, a week or so ago, I came across this baby naming philosophy on a blog. Loved it at the first line:
Naming baby is not about me! It’s not about showing how creative or intelligent I am, or about how many literary references or cutesy twists in spelling I can inflict upon a human being. It’s not about my personal philosophy of life or what I think is cool, or what celebrities I pay most attention to. I’m not engaging in an act of self-expression as I might be if I were picking a stage name, a pet-name or a character in a novel. I am naming, not just a baby, but a human being. What I choose will be an integral part of that child’s identity. And while no one except God himself knows who this little being inside of me going to become, the name I choose must respect, both horizontally and vertically who that child is. Horizontally the name connects the child to his or her community and culture. Vertically, the name should connect the child to his faith and or family traditions, to give the child the sense a sense of being rooted.