I need help figuring out what I've done for success and for failure. In the three attempts I CPOP at 170 for appr 30 min then turned off the oven and left it for 12 hours or so before unmolding. All three attemps I've used the off white batter, beautiful and lovely. These are all small batches while I'm learning, from 16 to 20 ounce oil recipes. I've made two batches of GM soap with CPOP method, first in a slab in single bar thickness, it DID orange and discolor even though I froze my milk to mix with lye, but since my fragrance was kind of an orange scent, that one worked out. (the lye mixture never heated over 75, as I ice bathed it while mixing) I only used micas, no TD, for a color design. The next I did a one pound loaf, this would be a 2-2.25 inch thickness, same frozen milk method, colored the batch at trace with cocoa/oil mixture...it made it a light coffee or hot chocolate color, NEXT I added TD and oatmeal to a bottom layer, pencil line with cocoa, and topped with the remaining cocoa colored batter. THIS GM recipe worked fabulously. NO DISCOLOR. It's perfect. Last night I thought I'd try YOGURT...in the slab (single thickness bars) , same lye method...same slab as first try. same results. I did used TD, but all the colors went dark and dingy looking, even the TD wasn't a pretty cream or white color. Any thoughts on what I did right and wrong? I'm wondering on loaf vs slab... Could the cocoa or oats have been a factor in the success of second batch? Should I try freezing my soap after I do the design in it with the slab mold, or give up the slab and just do the loaf?