[R] Changing appearance of band edges in xYplot()

[Michael Kubovy]

Dear R-helpers,

I would like the bands in an xYplot() to be gray without dark edges.  
I've tried playing around with col.bands, but that seems not to  
affect the edges, although changin col.fill does change the fill as I  
would expect.

I would appreciate pointers.

_____________________________
Professor Michael Kubovy
University of Virginia
Department of Psychology
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