Circle Background Color Option Doesn't Work

[vpjm]

I'm trying to use the documented circle_bg_color option but the background circle color doesn't change no matter what I put in there. The following is what I currently have.
$(".hp-hero-countdown").TimeCircles({ count_past_zero:false, circle_bg_color:"#202020", use_background:true, fg_width: 0.03, bg_width: 0.05, text_size: 0.07, direction:"Counter-clockwise", time: { Days: { color: "#94d300", text:"Days" }, Hours: { color: "#94d300", text:"Hours" }, Minutes: { color: "#94d300", text:"Minutes" }, Seconds: { color: "#94d300", text:"Seconds" } } });