I made a little "workflow"-diagram, that draws boxes with a little dropshadow. I do this by calling a paint method that does all the drawing. Then I apply a blur filter and shift the whole image slightly to the upper right. Then the paint method is called again, and draws the boxes, arrows, and text entries.
click here to run the applet and download the sourcecode.
lots of dots
Swarming Sprites using GLGraphics
Lensflare generator in processing