One thinsg to watch out for is if you override a method, but then need to pass the parameters through to the super. If you pass 3 params through to the method, args will be an array of strings with the length of 3. If you pass that straight onto the super, args will be an array, that contains 1 single array.

// overriding method
override public function addColor( ...args ):void
{
var numItems:int = args.length;
trace( numItems:int ); // 3
super.addColor( args );
}

// overriden method
public function addColor(...args):void
{
var numItems:int = args.length;
trace( numItems:int ); // 1
for( var i:uint = 0; i < numItems:int; i++ )
{
trace( args[ i ] );
}
}

you can handle this buy using Function.apply().

// overriding method
override public function addColor( ...args ):void
{
var numItems:int = args.length;
trace( numItems:int ); // 3
super.addColor.apply( this, args );
}

// overriden method
public function addColor(...args):void
{
var numItems:int = args.length;
trace( numItems:int ); // 3
for( var i:uint = 0; i < numItems:int; i++ )
{
trace( args[ i ] );
}
}

Nice! I think I had read that somewhere, but hadn't really checked it out. The "apply()" method is definitely a useful tool to have.