This is the 10433rd most frequent Polish word.
czerwonego
"Red" (genitive or accusative singular form of "czerwony").
The word 'czerwonego' is used in the accusative singular form, modifying a masculine noun 'samochód' to denote its color.
Kupiłem czerwonego samochodu.
I bought a red car.
Here 'czerwonego' is in the genitive singular case, describing the kind of wine ('wino') that is absent.
Nie ma czerwonego wina na stole.
There is no red wine on the table.
In this sentence, 'czerwonego' is again in the genitive singular case, characterizing 'światło' as having the color red.