XF 2.0 How do I replace Node-Icons

[Gamorreaner]

I would like to change the two speech bubbles (read/unread forum) into something else. Can someone please tell me where/how I can replace them?

 

[CyberAP]

Edit node_list.less:

        .node--forum &:before,
        .node--category &:before
        {
            .m-faContent(@fa-var-comments, 1em);
        }

 

[Gamorreaner]

Thank you!