Why it hides dirt so well
How well a floor hides dirt has almost nothing to do with whether it is light or dark and almost everything to do with contrast inside the blend. Domino carries a near-white chip, a mid grey and a black over a charcoal base, so at the six-foot viewing distance a floor is actually seen from, the eye reads texture rather than surface. Pale dust lands on the dark chip and dark grit lands on the pale chip, and neither one has a clean field to sit against. A uniform charcoal floor shows every speck of dust and a uniform pale grey shows every tire mark, which is the trap most people fall into when they pick a colour off a chip card at arm length.
What it looks like in a real garage
Full broadcast means chip goes into the wet base coat until the floor will take no more, then the excess is swept off and the surface is scraped back before topcoating. That produces a random, seamless pattern with no repeat and no direction, which is why a Domino floor never shows a seam where two days of work met and why a future repair blends in invisibly. Under typical garage lighting it reads as a mid-charcoal stone. Under bright shop LEDs the white chip lifts and the whole floor brightens the room noticeably, which is worth knowing if the garage is also a workspace.
How it wears
The chip layer is fully encapsulated in resin, so what wears is the topcoat rather than the pattern, and the pattern is what you are looking at. That is the practical reason a flake floor still looks intact after fifteen years while a solid colour of the same age looks tired. When the topcoat eventually dulls in the drive lane, a scuff sand and a fresh coat restores it in a day without touching the decorative layer underneath.