The email uses Ligo's vibrant brand palette (orange #F97316, green #71C07F, yellow #F5D783, and pink #EA8CE1) strategically — never overwhelming, always intentional. Each color serves a functional role: orange for primary CTAs, green and pink for secondary accents, and yellow for highlights. The flat illustration system with thin black outlines and rounded geometric characters creates a youthful, approachable aesthetic that resonates with college culture without veering into dating-app territory.