Color is not all there is that make up a great hosta cultivar, but it certainly at least ties for first along with texture. The other complex variable which goes hand in hand with color is the amount of the color and its location on the leaf. I suppose that I can only end with the beauty of the color is in the eye of the beholder. The spring color also may not be stable all year round. Cultivars emerge with white or yellow leaf colors that ultimately become increasingly green.
Cultivars emerge green or chartreuse and turn to yellow or whitish yellow.
Cultivars have yellow, yellowish green, or green areas that turn to near white. Blue to Green. The loss of blue is caused by the loss of pruinose epidermal wax, which produces a blue, glaucous sheen over a green background color. We can comment regarding the texture of hostas concerning the veins, leaf shape, leaf surface. These subjects are quite detailed, so please refer to the linked pages for each subject.