The flour directly ground from corn is white and yellow, with occasional black spots. This is a normal miscellaneous grain. There are black spots on the corn kernels, a mass of white starch, and the outer layer is yellow corn kernels. No matter how powerful the mill is, it is impossible to grind even flour, so the ground flour is absolutely yellow and white.
Bright colors, even colors, look particularly beautiful, feel particularly comfortable, pay attention. Farmers can't 100% grind out this effect. This is flour made of pure sugar residue by corn starch, fried oil and sugar grinding in the factory, so the color is even.