I've soaped with buttermilk in the past and most of time it turns yellow on me after lye is added. Yesterday the soap turned orange and now has a pinkish/orange cast. I did not add any coloring, it's a lavender soap and was going to add a purple tint but was afraid due to the wierd coloring. Could it be the buttermilk had more fat in it than norm? I really love the buttermilk and what it does for the skin but would love a more white soap. My other ingredients are shea butter 10%, olive oil 25%, avocado oil 15%, coconut oil 20%, pk oil 20%, lard 10%