I have been trying to color some M&P soap with a pink ultramarine. Both times I added it to the fragrance oil and both times it looked like I had it mixed in well. However, when I righted my mold the top of the soap has little flecks in it of what appears to be undissolved color. So I've made 2 batches now and am wondering what I'm doing wrong. I hate wasting oils so can anyone help me and tell me the right way to do it.