Board Thread:New on Pretty Cure Wiki/@comment-25034020-20181022151836/@comment-37117761-20181027155831

CureHibiki wrote: I theorise... after seeing the Miracle Universe logo... that Star Twinkle will indeed be space themed and will start off with pink, blue and purple Cures. Leaving yellow for the possible 6th ranger... and we haven't had a yellow 6th ranger since...Suite. I think it'll be pink, blue and purple to start in Star Twinkle because of the planet in Miracle Universe's logo XD I doubt it. In the left of the logo, from top to bottom, the colors are pink, blue, yellow, and purple. The 6th ranger will likely be purple. It would be awesome if you were right, but I doubt it.

There is the rainbow, which has the order pink, yellow, blue, purple, but that's only to make a rainbow, I think. Rainbows are common in Pretty Cure logos.