Instead of modifying the core Macromedia classes, a better option would be to either:



- Copy DataGrid.as into the same directory as the FLA and modify it there, this will take precedence over the other classpath.



- Subclass DataGrid like so:


	

		Actionscript: 
	
	
	

		
class SolidDataGrid extends mx.controls.DataGrid {
  function drawHeaderBG() {
    // Edited code here
  }
}

		

	



And change the class linkage for the DataGrid component you dragged into your library from StandardComponents.fla so that it uses your custom class and is called SolidDataGrid.



This way you don't break the functionality of the standard component.