Traditional Christmas colors are red and green, but festive foodies have been lighting up social media with hip ombre hues, too. For the decorating challenge, host Eddie Jackson asks five trendy cookie makers to create cookies that feature at least four shades of a color. Judges Ree Drummond, Jordan Pilarski and Gesine Prado determine which three bakers have the color palette and palate worthy of moving on to the display challenge, when the remaining competitors make the workshop glow with 3-D cookie creations that actually light up! They must incorporate invigorating ingredients like coffee, chai or matcha tea, and the cookie maker that shines the brightest becomes a Christmas Cookie champion.