We were asked by Cherry Thinking to produce a set of still images and video which would be used as digital content. The video was shot on the Sony FS7 at 180 fps which enabled us to capture the fluid motion of the liquids mixing. The end client wanted to show their two colours together and separately so we tested our approach in the studio and found using poster paints poured through a funnel into water in a fish tank worked well.
The process was quite slow because we had to fill the tank with water, let it settle, pour in the paints, then completely empty the tank before starting the process again for the next shot.