I bought the black/purple version for my son whose favorite color is purple.  They look gender-neutral to me and there is no mention on the box or any of the tags that this comes from the girls' department so fear not if this is the color that makes your boy happy.  It's just a pity the full range of colors isn't marketed on both the boys' and girls' side rather than arbitrarily assigning a couple of colors to each.

As for the quality of the shoes, we haven't owned them long enough to speak to durability but they look and feel well-made.  I've purchased similar shoes by the same company several times and they've all been outgrown rather than wearing out and that's with near-daily wear by active and athletic boys.  I'm hopeful that these will last just as well.

They are very, very light and flexible (as a minimal shoe should be) while still having good arch support.  The bottoms are grippy and my son tells me they are comfortable.  The laces are the perfect length (long enough to double-knot, short enough to single-knot without dragging).  Best of all, the colors are vibrant and fun!