[ronmatt]

This should get you started.. I haven't done this before so someone may have a better way.

A ) extract the background and copy it to a new window with a transparent background as layer 1

B ) copy layer 1 and give the copy a color overlay (layer 2 ). Posterize layer 1 ( this is level 5 posterization )
extract the white space in layer 1 and use a color overlay a shade darker than layer 2.

C ) Place layer 1 on top of layer 2