I'm looking for a way to change the icons used to sort the columns of the Grid 
component.  Since they are injected by relative path in the GridColumns and 
since the CSS class does not change according to the current sort state, it 
doesn't look like I could create a CSS rule and update the background-image 
that way.

The only solution I've come up with that seems like it will work is to 
implement a Markup Renderer Filter and go through the document after it's 
generated and replace all the urls with my own.  It would be much easier if 
this could be overridden at the Grid or application level somehow.

This sort of thing is something I face a lot in Tapestry when I would like to 
extend a component and make slight changes, but can't access most of the 
properties from the parent.

Any ideas on the best way to approach this?

Thanks,
Brian

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