Why would they be the colour of sand? You need to brush up on your geography. Africa and the Middle East are not large swathes of desert, cactus and thorns as you may think, there are different climates in different regions just like anywhere else in the world.I'm surprised the ones in Africa/Middle East aren't closed to the color of sand.
That is what I was thinking about too. How could the all those just have one camo? Well they have multiple shades of color so they can blend in with different environments.While the image looks cool, its fundamentally inaccurate as pretty much every nation uses multiple patterns depending on the environment they are fighting in. I mean US nightops mostly wear a dark grey pattern. Still, its a cool picture even if its inaccurate.