Black or white... or rainbows all over

I've been contemplating the borders for the picnic quilt. My original plan was to do a thin black border between the double hourglass blocks and the wonky words...


But I've been wondering if it is too harsh...

So then I was thinking of skipping the black and going straight from the double hourglass to the words... but I think that something is missing.

So now I'm thinking maybe doing a pieced border which continues the rainbow gradient of the words and the double hourglass blocks... hmmm