This gutter run for the 'Ephemeral vs Eternal - points in time' is such an exciting project to be working on it is a marble run of paint. I have been experimenting with different gradients and mixes of fluids. It's not as simple as it looks, there is the angle of the paint and the angle of the bracket. Mixing the strengths of the colors and the amount of oil in the paint also to get a good flow. To do this gutter run on a large scale will be extremely exciting.