Shy cats have cold activated blush that turn from pale pink to darker pink/red as the surrounding temperature decreases. Activation starts at 22°C (72°F) and gets more red as the cold gets more intense.
Designed, crafted and assembled by hand. Do expect some degree of flaws and imperfections in handmade goods - they are not factory made or mass produced but assembled entirely by hand. Nevertheless, I always try to make them as perfect as I can.