Adhering to this theme took discipline. When we developed the user interface, we discarded flashy, animated icons that appeared wrong. We based them instead on the austere, monochrome displays from real spacecraft or authentic simulators. Our colour choices were equally careful. We skipped the bright, bold colours of cartoon space adventures. The palette leans toward the deep black of nothing, the cool blues and purples of far-off nebulae, and the sharp white of starlight. This palette lures the player in, helping them focus more, which builds immersion.