知乎，让每一次点击都充满意义 —— 欢迎来到知乎，发现问题背后的世界。 It is likely that other employs of blue content are extensions of this source. Earlier utilization of blue for this objective is seemingly outlined during the OED. I believe, perhaps, the OP was asking more about the "Mammoni" variety. As I discussed higher than I believe in https://porni.mobi/