User blog comment:AmarinaDavi/Chika Takami in Future Card Buddyfight Version/@comment-11333632-20160907135353/@comment-26528086-20160907140448

The colors make sense. Chika's favorite color was Orange, You's favorite color was Light Blue and Riko's favorite color was Pink (and it was the worse color ever) so that it make sense on the background's color.