don't forget about older (but still fresh!) Frosting for rainbow parties (in the pantry here)
We have all seen tissue paper poms... but have you seen them done this way?!? GENIUS! I love the the ribbons with photos hanging from them too! super cute! Source
Use yarn to create adorable detail to favors, risers for your dessert table, around napkins, table legs... you get the idea! Source: Book Spectrum Scraps, More Last-Minute Knitted Gifts, page 122 (found via tinywhitedaises)
Doesn't this make your mouth water?!? Super clever mamma made fantastic french toast topped with a "rainbow" of fruits! Stinking clever! Source (found via bedifferentactnormal blog)
Polka dots are predicted to be hot this year! Why not incorporate them with this theme?! Also, dip (anything really) pretzels into multi-colored chocolate and finish with some luster dust to give them extra character! (p.s. use GEL coloring in white chocolate melts, not reg food coloring, you'll ruin it!) Source
look close... NOT macaroons... cupcakes!!! I LOVE IT! You can even make these just from a box mix (woot!) just mix, separate, add food coloring and then bake. Source and tutorial