Yeah, but I can see why. The beige and tan is Noctua, and up until now has been a way to distinguish them as extreme performance fans. Now the market is a lot more competitive. We have dozens of equally awesome, if not better fans that are just black, or black and grey, or black and white. They can't solely rely on their performance to sell fans any more.
But this new 120mm fan, it's like going back to the roots of Noctua where they were one of the only companies to consider if you wanted extreme performance at low noise levels. They can afford to go back to what they clearly prefer, which is a very distinguishable colour combination, as the fan's performance has no equivalent. No other 120mm fan performs as well. If I had that kind of power, I would want to distinguish my product visually as well.