Season of happiness

I'm a fan of "happiness" season– mostly because it's more grammatical than "relax" season. I am, however, a little confused about how it lines up with the more traditional seasons of spring, summer, fall, and winter. The scarf suggests that this is more of a cold-weather chocolate, but the bright green color on the scarf suggests spring. (It also suggests that the packaging designers couldn't be bothered to come up with a new layout for each of their limited edition flavors.)

Any guesses about what season will come next?