[Kevin Walzer] provides this before-and-after comparison:
[http://www.wordtech-software.com/notile.jpg] vs.
[http://www.wordtech-software.com/tile.jpg]

These shots were taken under [MacOS X].  Kevin writes:
"[[t]]he differences are pretty clear: the         
[Tile] version picks up the pinstripe background, and also the [entry]              
[widget] looks native (without the outline that one sees in the standard          
[Tk] version).  . . .  I           
don't personally see a huge difference on [Windows] when Tile is used             
there (standard Tk looks pretty much like any other Win2K appp), but            
it's pretty dramatic on the Mac."