Changing Style

In the last few days I noticed that the price slider on my site had changed from the standard colours in my theme to an odd purple shade (i’m assuming it’s woo purple). I went through all my plugins to try to figure it out and, when I deactivate Add to Any, my slider goes back to the colour it ought to be. When i reactivate it, it goes back to purple. This only happens on desktop, not mobile. I tried deleting the browser cache and purging the website cache before coming here, too.
I thought maybe I had some wierd css somewhere but the issue was still there after i removed my own css. As near as I can tell, this plugin and woocommerce aren’t playing nice but I don’t know any more than that (I’m a noob!).
Does anyone have any ideas about this? I love this plugin, all the others are bloaty and ungainly..

The page I need help with: [log in to see the link]