Scott,
Looks like you were maybe a bit earlier in the night!
We were in Coryell County at a drive in theater and I realized the sky was glowing pink over the intensity of the projector (and the nearby prison complexes). A few minutes later as the movie ended we managed to get back to a darker area of sky and I was glad I had brought my tripod. This is pretty close/accurate to the color/luminance for the naked eye. I didn't quite have time to get a few miles further to a place I'm aware of that has a nice old beat up wooden barn and aeromotor windmill. I hope someone made it to St. Olaf Kirke just a bit north in Bosque County. That would have made a stunning compositional element for the aurora and somewhere I may just plan to go if we have another G4/G5 event that works out like this.