First.. I would try out some sensory play. Which is you being blindfolded, most likely tied up and well he does stuff to you with objects. Feathers, ice, heat etc..
Second... If you are dark in the cooter area I really don't recommend colouring it blue. You need to get it to a inside of a banana peel yellow for blue to work... Also bleach that close to an open area of your body.. Also a no no.
Seriously don't try that.
I do hair for a living. Granted not the cooter hair but still.