I would put more embellishment on top, but not outlining the blocks so much as echoing the shapes with some other funky material as perhaps black and white stripes or dotty material - not solid shapes, but outlines made with the material so that your quilt peeks through. Then it would look very funky. I like discordant colours - it just needs a bit more pizzaz! Try cutting out the flower shapes or atom shapes outlines in the stripy material and placing the shape in the blank spaces or overlapping the other flowers slightly.