The answer is; False
Soil color does not only reflect the amount of organic matter present in soil.
Soil color is used to derive information about processes occurring in soil. Soil color is produced or determined by the minerals composition and the organic matter content of the soil. Soil color can reflects the amount of organic matter present in soil, it can indicate the composition of soil, it can provide clues about the state of soil and it can reflect its age. Also, soil color can indicate the temperature and moisture properties of the climate of a particular region.