I ordered a swatch of this with my first order, the swatch was pinned on the sheet of paper showing the reverse side if compared to the picture on the website.
I still don't know which side is the right side but, given that I like them both, ordered the pants anyway.
Actually I prefer them how I got them, it is a lighter blue than the one showed in the picture. I will try to provide better pictures when I arrive home.
here are the pictures. The big "swatch" underneath are my trousers. On top of them you can see the swatch on both sides. If you compare my pictures with Luxire's webpage picture, it really seems that they published a picture of the reverse side.