The point of modding is to give it a touch of character akin to no other. To have something, at the time of working, was not available for purchase. On another note, you may want to look through Jason Pierce's works. He's the one who painted that chassis white.
That being said, if you're comparing a Corsair 600T to the Nanoxia lineup of chassis, that's not a good comparison. Nanoxia also came very late into the market.