I don't know what they are called but i love them... captured in the backyard of our building.. two large images are natural colors due to dry grass and leaves in the bokeh.. smaller one achieved with white balance adjustment.
Once i saw these three photos in Picasa i got the idea for tripych..
BTW.. if you apply USM after flattening such multi-layer image with white b/g its quite interesting that you get slightly darkened edges (also around my name!!).. NICE!!