If the statute does not involve a suspect or quasi-suspect classification, then rational basis review applies, in which a court must ask whether the statute is rationally-related to a legitimate governmental interest.
Autumn Foliage Color. The Process of Leaf Color Change. Leaves change color during the autumn because the amounts of pigments change as the leaves prepare to fall from the trees. All leaves gradually lose chlorophyll during the growing season, and this loss accelerates before leaf fall.
Look for color changes in the fall. The leaves of evergreen oaks are shiny and dark green all year, but most oaks will turn colors in autumn. Some oaks, such as scarlet oak (Quercus coccinea), sport brilliant colors in the fall. White oaks and chestnut oaks are often a dull brown when color comes around.