This is the 3087th most frequent Catalan word.
negres
"Negres" in English means "blacks" or "black ones."
In this sentence, 'negres' is used as an adjective describing the color of the walls, denoting the plural form of 'negre', meaning 'black'.
Va pintar les parets totalment negres.
He painted the walls completely black.
Here, 'negres' again functions as an adjective describing the cats' fur color, pluralized to agree with the noun it modifies.
Han adoptat dos gats negres.
They have adopted two black cats.
'Negres' in this example is used metaphorically to represent something negative or grim, describing the situation in a figurative sense.