How to get your free 2021 reusable red holiday cup at Starbucks adores their colorful mugs! Coffee enthusiasts are hooked on the magical cups that change colors color-changing tumblers. Boasting innovative design, the colorful tumbler transforms its hues in the blink of an eye. Our favorite drinkware have become trending items, sparking a craze among caffeine lovers. The renowned brand knows how to thrill and enchant its loyal fanbase with its creative additions. Cheers to Starbucks for adding a touch of magic to our caffeine fix with the starbucks color changing cup!