Although not an official variation, DCs 4421 and 4853 have received KiwiRail stickers on the front of the short-hood, and back of the long-hood.
ɔːlðˈoʊ nˌɑːt ɐn əfˈɪʃəl vˌɛɹɪˈeɪʃən, dˌiːsˈiːz fˈoːɹ θˈaʊzənd fˈoːɹhˈʌndɹɪd twˈɛnti wˈʌn ænd fˈoːɹ θˈaʊzənd ˈeɪthˈʌndɹɪd fˈɪfti θɹˈiː hæv ɹᵻsˈiːvd kˈiːwiː ɹˈeɪl stˈɪkɚz ɔnðə fɹˈʌnt ʌvðə ʃˈɔːɹthˈʊd, ænd bˈæk ʌvðə lˈɔŋhˈʊd.