Bumble-Bee was an informal term, promoted by the editors of NZ Railfan magazine, describing a New Zealand railway locomotive livery (resulting from the combination of black and yellow in the colour scheme) found in common usage amongst the railfan community.
bˈʌmbəlbˈiː wʌz ɐn ɪnfˈɔːɹməl tˈɜːm, pɹəmˈoʊɾᵻd baɪ ðɪ ˈɛdɪɾɚz ʌv ˌɛnzˈiː ɹˈeɪlfən mˌæɡɐzˈiːn, dᵻskɹˈaɪbɪŋ ɐ nˈuː zˈiːlənd ɹˈeɪlweɪ lˌoʊkəmˈoʊɾɪv lˈɪvɚɹi ɹɪzˈʌltɪŋ fɹʌmðə kˌɑːmbᵻnˈeɪʃən ʌv blˈæk ænd jˈɛloʊ ɪnðə kˈʌlɚ skˈiːm fˈaʊnd ɪn kˈɑːmən jˈuːsɪdʒ ɐmˌʌŋst ðə ɹˈeɪlfən kəmjˈuːnᵻɾi.