Conventional ethylene-glycol (IAT) engine coolant is dyed dye-bright fluorescent yellow-green — the glowing chartreuse liquid in a translucent jug. This design system bottles that scene: a dark, oily garage of concrete and steel gray, with the coolant glowing against it under hard light.

Glossy plastic, hazard-warning condensed sans, and an automotive label grid define the look. Buttons read as glossy label chips; cards are dark steel panels with high-contrast green readouts and grid-aligned label blocks.