This is the 2035th most frequent Polish word.
kolory
Colors.
Here, 'kolory' is used to denote a variety of colors in general.
Lubię różne kolory.
I like different colors.
The word 'kolory' here refers specifically to the colors used in a painting, highlighting their vibrance.
Kolory na obrazie są bardzo żywe.
The colors in the painting are very vivid.
In this sentence, 'kolory' describes the spectrum of colors observed in the scenery of the sky during sunset.