Saw the rainbow and was thinking of Nyan Kitty.

https://youtu.be/QH2-TGUlwu4

Hmm ... I wonder ...

https://www.lexaloffle.com/bbs/?tid=2290

BUSTED. JD, you should really give credit to Ivoah for copying their code character for character.

Your function. _draw(), his function, draw_rainbow().