Waterlilies are fascinating. The way they are completely different colors in the shade versus the sun. The variety of flowers that they produce (I really need to research this more - in the park by my house, they bloom small yellow flowers and about 30 minutes away in another park, they bloom the white flowers). I walk the trails in this park often and each spring, I wait for the flowers to pop up. Such a simple shape and yet it brings such joy to paint for so many!