C.R.S. § 25-5.5-111
25-5.5-111. Treated milk to be labeled
25-5.5-111. Treated milk to be labeled. It is unlawful for any milk or cream to be sold or offered for sale which has been homogenized, viscolized, emulsified, or treated in any manner which will give it the appearance of containing more butterfat than it actually contains, unless it is so labeled as such.