assert propDefn.getType( ) instanceof ColorPropertyType;
if ( propDefn.getTypeCode( ) != PropertyType.COLOR_TYPE ) return null;
	protected ColorHandle getColorProperty( String propName )	{		ElementPropertyDefn propDefn = getElement( ).getPropertyDefn( propName );		if ( propDefn == null )			return null;		assert propDefn.getType( ) instanceof ColorPropertyType;		return new ColorHandle( this, propDefn );	}