It seems like I've left out a video that inspired me for my second (and now main) idea. The video is what triggered the thought of paint and the "evolution" of paint as they interact. I am going to include the link to the advert it was made for and also a link to the "making of" video of it which i found very interesting to watch so take a look and Enjoy!!
Edit: I've tried asking what type of paint they used for this so that i could look into the paint and see if its suitable for my idea so fingers crossed that they reply.
Canon Pixma Sound Sculptures from Dentsu London on Vimeo.
And the Making Of
Canon Pixma: Bringing colour to life from Dentsu London on Vimeo.