The Indonesian becak — a cycle rickshaw — is a rolling folk canvas. Its steel body panels are coated in glossy sky-blue enamel and hand-painted with naive scenery: red and yellow mountains, green fields, and bright flowers, all framed by bold white-outlined route lettering. For four decades, anonymous roadside sign-painters turned working vehicles into cheerful primary-colour folk art.

This design system distills that tradition into screen form — a vivid blue enamel ground, high-gloss saturated primaries, chunky rounded lettering, and white-outlined illustration vignettes that carry the sunny optimism of a Javanese street corner.