Regardless of tire size, tan sidewalls are in. Like most fashion trends, it may not last, but that hasn’t stopped Maxxis from adding a number of new skin / tan / brown (or whatever you want to call it) options to the line up.
In addition to the Rekon + shown above, on the gravel/all road side the Rambler And the Re-Fuse get tan versions of their own, both in 700c x 40mm tires with Tubeless Ready casings.