<i>(FYI all butter is also tinted yellow)</i><p>This is trivially false, in that even in the US there are many brands that do not color their butter[1], but I&#x27;d be interested in knowing the truth.<p>Is there an FDA rule that allows coloring to be added to butter without adding it to the ingredient list?  I found a rule saying that FD&amp;C Yellow No. 5 must explicitly be listed[2], and I did not see any exceptions for carotene.<p>[1] <a href="http:&#x2F;&#x2F;organicvalley.custhelp.com&#x2F;app&#x2F;answers&#x2F;detail&#x2F;a_id&#x2F;59&#x2F;~&#x2F;butter---do-we-add-color%3F" rel="nofollow">http:&#x2F;&#x2F;organicvalley.custhelp.com&#x2F;app&#x2F;answers&#x2F;detail&#x2F;a_id&#x2F;59...</a><p>[2] <a href="http:&#x2F;&#x2F;www.fda.gov&#x2F;ICECI&#x2F;ComplianceManuals&#x2F;CompliancePolicyGuidanceManual&#x2F;ucm074644.htm" rel="nofollow">http:&#x2F;&#x2F;www.fda.gov&#x2F;ICECI&#x2F;ComplianceManuals&#x2F;CompliancePolicyG...</a>