This is the 13687th most frequent Russian word.
неоновая
Neon.
In this sentence, 'неоновая' is used as an adjective to describe the type of lighting, indicating it emits neon-like bright colors.
На вечеринке была потрясающая неоновая подсветка.
At the party, there was amazing neon lighting.
Here, 'неоновую' as an adjective characterizes the color of the jacket, implying it's bright and eye-catching like neon lights.
Она купила себе неоновую куртку.
She bought herself a neon jacket.
The usage of 'неоновые' as an adjective here describes the type of lamps, indicating they are intended to mimic or emit actual neon light.