bakingnana, the royal blue, or midnight blue was obtained with a teaspoon of indigo disolved in the lye water. All my measurements are for a Kg of oils or a 'duck' of soap, which is what I make and the size molds I use. The base oils were Soy and coconut oils. Soy does add a tan pinkish hue.
The color of the soap with inserts (the part that is not inserts) I got by blending blue and yellow. The blue I got from 1/8 tsp indigo (for 1 kg weight oils) and the yellow by using 5% of my oil as yellow coconut oil, made yellow from beta carotene. The base oils were OO and CO. Another time I used the exact combination but using SO instead of the OO and I got a celadon green color, rather than the aqua color I get with pomace. Both are beautiful to me.
The green (forest green?) shown in the picture with the soap strips was obtained with a mix of chlorophyll and instant green tea. I also added rosemary EO, and for this one I only used 1 teaspoon of the liquid chlorophyll (as can be purchased in the health food stores). Also, I did not gell that soap. The result was that it lasted the longest before getting the DOS. I think this was a combination of not gelling, using very little chlorophyll and the anti oxidant effects from the rosemary oil. I am doing a shelf-life test on all my soaps and this one is still OK after 3 months, let's see if it makes it to 6 months. Even if it does, I won't use this colorant again.
However, when I used a good amount of chlorophyll (1 to 2 tablespoons per duck of soap) I got the DOS rather quickly (within 3-4 weeks). This was a lot worse (the soap went bad more quickly) If I gelled the soap, and the worse was at the highest gelling temperature. This was really obvious, since I do make the soaps with inserts and I knew which strips had gelled at higher temperatures and which had more or less chlorophyll.
Chlorophyll gave a beautiful green color, was easy to use, and this is why I used it at first. I will never use it again, I learned my lesson. It is the manganese molecule in the chlorophyll which apparently wreaks havoc with the residual superfatting oils. I wanted to post this here as a warning, since I had to discard a lot of soap, which is not good news for anyone.
In any case, using a combination of different amounts of indigo and beta carotene (from the coconut oil used to make pop corn) I can get any shade of green I want. I just made one that looks like my tuscan kale! (eucalyptus green?)
I would post more pictures, but need to figure out how to get them to post here directly, the linked ones are not as user friendly.