The reason is.

Kugou’s logo is originally blue.

The high-quality products and services provided by KuGou have become one of the most popular Internet products for young Chinese users. The services provided include DIY personal digital albums, KuGou Entertainment, which leads the information trend, and all-weather online live broadcasts. Music radio stations and mobile music players, information, audio-visual and interactive, enable users to enjoy integrated entertainment services in KuGou. On July 15, 2016, QQ Music, Kugou and Kuwo announced their merger. On January 24, 2017, Kugou merged to become a business platform under Tencent Music Entertainment Group.