We've done a bourbon and coffee injection with briskets several times and really like it. Never tried wine, but for the bourbon coffee we did use a couple tablespoons of vinegar...
Here's Redhot's sliced pic from the last time. Didn't have much of an interior coloration issue. We did reduce the injection/marinade to slightly sauce the flat.
Pit Beeatch for Team Munchkin
Avatar by Northwest BBQ
"...In nature, there are predators. I believe the common denominator of the universe is not harmony, but chaos, hostility and murder..." Werner Herzog