I made my soap using pomace ilive oil ,coconut oil and castor oil.
It would help us help you if we had the following information:
How much of each oil did you use, how much water and how much lye. What kind of lye did you use, and was the method cold or hot process?
I lived in a very hot and humid country called El Salvador, but I used fruit purees, not fruit powders, to add to my soaps. Like
@Todd Ziegler mentioned above, dried fruit, whether in powder or pieces, will turn brown in soap because of the lye reacting with the sugar. If you add the puree frozen, then the sugars are so cold, they cool the lye solution until the reaction is over and they don't burn. I'll find soaping101's YouTube video tutorial and post it here for you on how to add fruits to your soaps. It's the same as when adding milks, or anything else that has a sugar content.
One last thing. The recipe you made is essentially a Castile soap, even if I don't know the quantities of the oils. And all the oils are "soft", which means that the soap will take a very long time to harden in the mold. I know this because I've made that soap with those exact ingredients many times. Believe me, putting it in the sun will make it take LONGER to take out of the mold! Put it in a COOL place where it's out of the way, and place a light cloth over it to keep the dust and bugs off of it. And let it just sit for a few DAYS. Yes, days. It will take anywhere from 3 to 4 days to harden, unless you added too much water, or too much castor oil.
Please, post the recipe for us to see if there might be a problem, or if it's just a matter of waiting.
Edited to add: Here's the best video I found for adding a fruit to soap. Yes, it's juice, but it has a high sugar content. Notice that she uses the lye and the oils at their coolest temperature, which isn't possible in a hot climate. That's why I always froze my fruit puree and juices before adding the lye to them. And if I had to melt any fats, I would add the soft oils to them as soon as they melted and then let them cool before adding the lye. All this before adding fruit in any form.
I hope this helps.