Ah, I see. Well technically what you want is possible, but not by using the rating bar element itself.
THIS is my NPS
I’m using some custom string templates to display special characters (stars) so that I could display my ratings in a different way. The CON here is you can’t directly interact with the rating tag from these characters. But this could give you the aesthetic you were looking for.
I don’t set my ratings in symfonium so the pros outweighed the cons in my case.
To save you some time I pulled the portion that displays my ratings. Please keep in mind if / when you enter this into symfonium it needs to be all on one line without the breaks (new line that results from hitting enter), it’s just slightly easier to understand one line at a time.
{☆☆☆☆☆%|userrating.5=="0"%}
{☆☆☆☆★%|userrating.5=="1"%}
{☆☆☆★★%|userrating.5=="2"%}
{☆☆★★★%|userrating.5=="3"%}
{☆★★★★%|userrating.5=="4"%}
{★★★★★%|userrating.5=="5"%}