One quick Question- Should Francis',as a turtle, hair be brown or Purple and yellow hair?

I have an Contest Idea:

Crack Couples Contest

Here's the rules;
1) Has to have at least one of my OCs
2) Can be coupled with cannon characters or OC's
3) Can be Yuri and Yoai
4) Be creativity and have fun

1)
2)
3)

1at place- A short fic of the couple and 3 bases
2nd Place- 2 bases
3rd Place- 1 base

Contest ends Dec 31st