I absolutely adore the peppermint swirl dress pattern, and would love to make one with a rainbow skirt. I haven’t the slightest idea what to do for the top … another colour looks out of place, but using one of the skirt colours in the top looks odd too. Then I saw a rainbow skirt where seven of the fourteen panels were black with a black top. It was an awesome look. Then I saw black stripes with a rainbow stained-glass. I would have made it, but the fabric was a limited run that became unavailable at the end of last month.
So I thought about designing my own rainbow fabric for the dress. https://www.spoonflower.com/designs/6869492-cubistrainbow2-by-lisa5 … split out with black strips, it looks like this: