Thanks for reaching out to us!
Currently we don’t have a way to selectively apply saturation or temperature to your photo. I’ve added this to our wishlist for inclusion in a future Ribbet version. Once we add this, you’ll be able to erase the change in saturation/temperature from certain areas of your photo such as people’s skin.
I’ve also added to our list the addition of red/green/blue sliders within our Basic > Color tool, so that you’ll be able to reduce the amount of red in the photo without affecting the other colors.
Let us know if you have any other questions or suggestions.
Regards – The Ribbet Team