src/main/java/com/bazaarvoice/jless/parser/Parser.java
Rule FilterArgument() {
        return Sequence(
                Ident(), push(new FilterArgumentNode(match())), Ws0(),
                '=', Ws0(),
                Value(), peek(1).addChild(pop())
        );
    }
Rule FilterArgument() {
        return Sequence(
                Ident(), push(new FilterArgumentNode(match())), Ws0(),
                '=', Ws0(),
                Value(), peek(1).addChild(pop())
        );
    }
Rule FilterArgument ( ) { return Sequence ( Ident ( ) , push ( new FilterArgumentNode ( match ( ) ) ) , Ws0 ( ) , ' ' , Ws0 ( ) , Value ( ) , peek ( 1 ) . addChild ( pop ( ) ) ) ; }
Ex: startColorstr=@lightColor
Ex : startColorstr =