Starbucks Halloween Cups 2024 Green. Starbucks fans have been discovering its halloween collection in stores, including a green slime cold cup and colorful pumpkin tumbler. The chain announced its halloween drinkware line september 12, 2023, with haunting but beautiful designs like a green slime cup.

The entire cup has an ombre look in candy corn colors. The spring season usually evokes pastels and brightly.