Primary Technique: In-camera long exposure, enhanced with Color Grading.
In-Camera: Tripod mount, Shutter Speed ~1.0s, Aperture f/11, ISO 100.
Basic Panel: Contrast +15, Blacks +20 (faded).
Color Grading Panel:
Highlights: Hue ~45 (Orange), Saturation ~30 (for the lights).
Shadows: Hue ~210 (Blue), Saturation ~15 (for the night).
HSL Panel: Orange Saturation +20, Yellow Saturation +20.
Masking: Add a Radial Gradient over the person. Inside the mask, Shadows +60, Exposure +0.50.