This is a fairly old post Wessam, but you can use any soap recipe you are comfortable with. I find the color retains more color if I mix my lye solution with 50% or more water and replace the additional water with pureed baby carrots. I usually add in my pureed carrots into the oils and stick blend them together just before adding in the lye solution. Lye needs at least equal its weight in liquid to dissolve. Just remember the puree takes the place of the remaining water requirement. Example if your recipe calls for 13 oz water and you make a solution with 6 oz water, 6 oz lye, you could add in the remaing 7 oz liquid as puree, milk, water etc. You can also figure out how much puree you want to use, lets say 4 oz, then deduct it from your total water requirement, make your lye solution with the balance of the liquid.