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.
Production on the film took place during autumn, so leaves in the background of shots were sprayed green. The film takes place during the summer, but was actually shot during mid-October. Set decorators painted the leaves green to hide that the season was changing and dead leaves were all around.