Comment #4 on issue 691 by andreho...@gmail.com: Change the fill color of bars http://code.google.com/p/moose-technology/issues/detail?id=691
#setColoredFill is just a script helper to be used with #setLinearFill #setInvertedLinearFill when you want colored liner fill (that's the original implementation, I just fixed).
If you check Issue 712, I created the method #fillColor: that receives a block and works like in Mondrian.