So I picked Goats milk Melt and Pour as my first test. I Did two test for each one. The first test I did was the birds with color after I filled the bird mold I added one to two drops of color to the rest and did a little flower . The first impression from the Birds after taking them out of the molds . They were all creamy white with no color change . A few hours later #5 has a discoloration to it (like vanilla is present in that one). It is a very light brown. So far no others have changed. The flowers have not shown any color change , even the one with #5 in it!