src/main/java/com/bazaarvoice/jless/parser/Parser.java
Rule Literal() {
        return Sequence(
                FirstOf(Color(), MultiDimension(), Dimension(), String()),
                push(new SimpleNode(match()))
        );
    }
Rule Literal() {
        return Sequence(
                FirstOf(Color(), MultiDimension(), Dimension(), String()),
                push(new SimpleNode(match()))
        );
    }
Tokens that don't need to evaluated