shapeBurstFilter
applied to a red-based gradient rectangle (the last rectangle in the image is the original one)
This is sample usage, the code shown is for the first rectangle in the image
The trick with adding the filters is making a wrapper for each one in order to make them "observable", in other words, to be bindable and animatable

There are other goodies by the way:
colorPaint
is a color-based paint, useful withmultiPaint
antialias
is a shortcut for setting renderingHints for antialiasingpin
is another shape that resembles the waypoints/pins on Google mapstriangle
is a shape operation for equilateral, isosceles and right triangles
Keep on Groovying!