[jyl]

If the garage walls are dark (e.g. unfinished studs) I'd choose a light color for the cabinets to brighten the space. Probably I'd choose the white cabinets, and not paint further (paint later, after I finished the walls).

If the garage walls are bright (e.g. white-painted drywall) I'd choose a darker color for the cabinets to give some variety and show fewer greasy fingerprints, tool marks, dirt, etc. Charcoal gray, perhaps.