Damn, the Leica SL's white balance is spot on. And, it's little surprise that the Vario Elmarit 24-90's is so sharp at near-macro distances. God bless you, Leica.
The above image is a quick snapshot I took of Astell&Kern's brilliant AKT8iE earphone. (Review here.) I whipped it out of the box, wiped it, snapped it to the perspex, and fired up the SL. I noticed that the Leica M240's AWB nails flash settings, too.
Here's the above at 200%, @Lightroom default zeroed settings.