1. A method comprising: reading, by an identification element reader of a biological growth medium processing system, an identification element associated with a biological growth plate for growing and detecting bacterial colonies, wherein the biological growth plate is obtained from a particular manufacturing lot; identifying, by a computer of the system, manufacturing information associated with the particular manufacturing lot using the identification element; wherein the manufacturing information includes one or more spectroscopy measurements measured from the biological growth plate when the biological growth plate was manufactured; identifying, by the computer, based on the spectroscopy measurements, variations from expected colors; inoculating the biological growth plate; generating, by a biological reader of the system, an image of the biological growth plate after bacterial colonies have formed on the biological growth plate; modifying, by the computer, the image by applying color offsets to colors of the image of the biological growth plate, thereby accounting for the variations from the expected colors; and counting, by the computer, using the modified image, the bacterial colonies on the biological growth plate.