 Colonies of "M. goodii" are smooth to mucoid, off-white to cream coloured.in After 10–14 days incubation, 78% of all strains produce a yellow or orange pigment.Strains of "M. goodii" show rapid growth on Middlebrook 7H10 and trypticase soy agar at 30 °C, 35 °C and 45 °C within 2–4 days.