Yellow on the outside, yellow-green whipped cream deco inside! Instant purchase OK! ☆ The hard card case size is B8, vertical insertion. ☆ If any parts come off, please reattach them with your own adhesive. ☆ Please be aware that there may be a unique silicone smell, so those sensitive to smells should take caution. As this is a handmade item by an amateur, please refrain from purchasing if you are overly concerned about details. Although I make them carefully, there may be small scratches or imperfections. Please refrain from purchasing if you are seeking perfection. Only those who understand this are kindly requested to consider purchasing. Thank you for your understanding before purchasing.