Is there any way at this point to know what is correct? If any original prints still exist, their color accuracy is not reliable. Unless somebody documented what the original colors where in every sequence using some numeric valuation*, I don't know if we will ever know what the original colors where.
* In the printing industry we use the
Pantone Matching System (with the unfortunate acronym of PMS), but I know that this PMS system was not in place when Sleeping Beauty was made.