I search and couldn't find much! I am a Kakeladi's WASC girl. I was requested a Butter Golden Cake. I did get the Butter Golden Cake Mix from Duncan Hines hoping to follow the wasc recipe but since it doesn't call for oil/butter, how donI make it *Butter* golden? 

there is way that will not alter the recipe … add maybe a couple of teaspoons of butter extract.   

You can add brown sugar and browned butter. I add browned butter to a white/vanilla cake, and it really gives a “golden” flavour. 

https://www.simplyrecipes.com/recipes/how_to_brown_butter/

About three drops of yellow food coloring should do the trick or (for completely natural color) a pinch of turmeric.