I was going through my photos, trying to decide what to post today, and I came across this one from the new years fireworks from this year. The photo was a little colorless because of the fog, but I played a little around with the tint, pushing it a little more towards purple, and it became quite colorful :)
This is a single RAW file, exported three times (base, shadows and highlights) and blended together in Photoshop.