This is awesome! Thanks.
While attractive, this does remind me of Tufte's concept of chartjunk.
Well you could use this to create chart junk, but patterning in itself has been used succesfully for ages for ecoding visual variables. Especially in mapping before the proliferation of color printing.
Patterns are even on the cover of Jacques Bertin's seminal Semiology Of Graphics: http://esripress.esri.com/display/index.cfm?fuseaction=display&websiteID=190