No filters. I took them all off for the wedding (yes even UV).
OK - you've all been "this" close.
The problem, which I did not notice until I processed the images, is that the outside street lights were sodium vapor lamps. They cast a specific yellow/orange light. The original pics shows everyone orange. When I countered the problem by white balancing for skin tone, the outside light became completely blue.
The software I use reports the white to be 14,000 degrees kelvin when balanced. Wow! That's over twice normal.
The lesson? Flash is good. In the second image I used flash, which among other things, gaurenteed that *I* controlled the light.
GAD