This is the 14008th most frequent German word.
gefärbt
Colored; dyed.
Here, 'gefärbt' is used as a past participle adjective to describe the state of the picture being dyed or colored.
Das Bild ist bunt gefärbt.
The picture is colorfully dyed.
In this sentence, 'gefärbt' serves in a passive voice construction as the past participle of the transitive verb 'färben', indicating what happened to the hair.
Die Haare wurden gestern professionell gefärbt.
The hair was professionally dyed yesterday.
'gefärbt' is describing a state as part of a longer descriptive phrase about the sky during sunset.