If you place the blobs of colour right on top of each other in the mixer you'll get a simple mixed colour.
However, if you place them slightly to one side of each other so that they form lumps, you'll get a tumbler colour, which will change the colour as you work.
You can also spin the tumbler colour. Hover over it with your primary imp and grab it with the primary T button .
Move the primary controller in the direction and speed you want the colour to spin and release the primary T button .
Static and spinning tumbler colours behave differently while you work, and the effect varies depending on the tool being used.
For example, with smear shape, a static tumbler colour will change with each separate smear, but a spinning tumbler colour will change dynamically as you smear.Next: Scatter (Paint Tools)
The Dreams User Guide is a work-in-progress. Keep an eye out for updates as we add more learning resources and articles over time.