If you're after a bit more light one of my first mods to any new car is to swap out the reverse light(s) to LED. They don't have to be super fancy ones, around $10/pr on line does the trick.
If you really wanted bright a pair of strip DRL's could be cut into the black bumper strip. Add a switch or maybe spliced into the fog circuit (on with fog and reverse).
All for off road use only of course!
Add a reversing camera- generally they work really well in low light.
Finally you could swap the rear fog to a white LHD reverse light, then add an auxiliary rear fog.