That's a good question. You are talking about one that goes into the OBDII port right?
Most people I know will just put their exotic on a trickle charger if they don't drive it often enough. I'd suggest one of those, they are cheap and easy.
Black with some very small/slight red accents would be my favorite as well. The pictures above might have a little too much red for me. I like something a bit understated.
I also like dark gray but it's definitely more work and harder to keep clean...
That looks like a different color and definitely has different wheels. I couldn't find the factory color listed though. Here is the VIN of that one: zpbuc3zl9rla28875
Just saw this beautiful Urus S come up for sale at Lamborghini Houston. Wanted to post some pictures as it is beautiful.... green isn't usually my color but the matte works great with it. Thoughts?