I got the idea from here too. I've seen a couple people that has it like that. I believe tjxjwj has it like this too. I used to have the entire light blacked out but I really like this way better. Plus your reverse lights work better too. ;-)
Installed Overland rock rails on my '01 WJ Laredo. They were rusty, so I cleaned them up, had some spots welded, painted them and bolted them in. Very happy with the results! Next? Plasti-dip my JK Wrangler wheels since I haven't seen a set done yet on a Grand Cherokee.