I made some UFO soaps yesterday. I used ultramarine pink mixed in glycerine and Super Pearly Mica. The fragrance was BB Strawberry Surplus. The base is the BB House Clear.
This morning when I left for the market the soaps were light pink. By noon they had turned a very bright orange.

It was wicked hot today (98 in the shade) but they were not sitting in the sun.
I checked the leftover soap from this batch tonight. It has a very slight orange cast to it. My workshop is in the garage which gets a little toasty in the summer.
So did the heat cause the color to morph or is a weird reaction with the FO?