All my balls have individual likes and dislikes of temps. My calico spends most of her time on the cool side; my banana splits his time between hot and cool, my super pastel spends about 90% of his time on the hot side and my ghi spends the majority of her time on the cool. They may seem cool to the touch but that's normal. Our warm blooded hands make them feel cool but as long as you their cool side temps dont dip past 75* they're fine. I keep my snake room temp set at 75-80 so it makes it easy to keep up temps.