Once the buttercream is prepared, you can vary the color flavor profile by adding food coloring & food flavor of your choice. Some combinations to experiment with include: Rose extract & Red food coloring; Lavender extract and purple food coloring; Lemon extract and yellow food coloring; Pumpkin spice and orange food coloring; coco powder and chocolate extract. You can also mix in jams, curds, ganache, pistachio or hazelnut flour.
As you can see the traditional approach is complex, messy and tiresome. Alternatively, you can just use our Swill Buttercream mix and focus on your preparation. Please review this post to lean more.