I tend to prefer darker coloured lures at night, gives a better silohuette. Also Like using poppers and other surface lures in the dark, bit of topwater disturbance drives the barra nuts.
At nightthough, it's more reliant on the action you give the lure, i think a bit more of an aggresive action is required to get the fish's attention, not only does the dark make the lure harder for the fish to see, but you are also battling against the baitfish with their very tempting scent. Need to really work the lure to get a bit of attention I reckon, keep the same retreive speed, but make your twitches, harder ans sharper to really make that lure work and vibrate in the water