How was the twilight blue color effect in this photo produced

I really wonder, when I see some people showing their creativity, composition sense, and light sense through their photographs. I just came through such a photo now. This is the photo: I saw this

AddNorth Textura Flare Twilight Blue - 3DJake International

Abstract Black Pastel Blue Twilight Blue Deep Navy Blue Colors Gradient Mixtured Effects Fogg Smokey Background Wallpaper Stock Illustration - Illustration of circle, cyan: 276783351

shooting technique - What is this effect, with millions of coloured light dots surrounding people in the dark? - Photography Stack Exchange

photoshop - What is this effect called? And what happens with the colors at that moment? - Photography Stack Exchange

Glow in the dark disappearing room Poster by Twilight Vision - Fine Art America

post processing - Can someone shed some light on how the effect in this bar photo was done? - Photography Stack Exchange

post processing - Can someone shed some light on how the effect in this bar photo was done? - Photography Stack Exchange

Twilight Colors In Arizona poster by Alan Dyer. Our posters are produced on acid-free papers using archival inks to guarantee that they last a

Twilight Colors In Arizona Poster

Out of the Blue: The Importance of Twilight to the Night Photographer — National Parks at Night

color - A photo effect that favours yellow & blue; What is its name & how is it done with GIMP? - Photography Stack Exchange

photo editing - What software is photographer Diar Kamal showing on his Facebook page and Instagram feed? - Photography Stack Exchange

What is this effect with blue and yellow color shifts around objects? - Photography Stack Exchange

Citro 30 H2O

color - A photo effect that favours yellow & blue; What is its name & how is it done with GIMP? - Photography Stack Exchange

Pantone Twilight Blue Pantone blue, Pantone color, Pantone colour palettes