Thanks everyone I did separate batches for each layer. I have my oils and lye premixed at room temp. for total amount of oils so it goes pretty fast. I just measure oils, lye water, Fo and color for one layer, trace and pour. By the time I get one ready to pour, the last layer has set up enough. With 4 colors I divide the batch by 4 and print that amount out on soapcalc. That's what I'm measuring for each layer. Hope I'm explaining this right. LOL