@namespace url(http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul);

@-moz-document url(chrome://stylish/content/stylish.xul),
               url(chrome://stylish/content/stylish.xul?sidebar=1),
               url(chrome://stylish/content/manage.xul),
               url(chrome://stylish/content/manage.xul?sidebar=1) {

/* this is for disabled styles */
treechildren::-moz-tree-checkbox {
     list-style-image: url("data:image/x-png;base64,iVBORw0KGgoAAAANSUhEUgAAACsAAAAOCAYAAAC2POVFAAAAiUlEQVR42u2UUQ6AMAhDx/0Pre5jkTRFVoOJmvXHZAX2HGy2HWofkf0D1qy1bo2vVDXIUWtBfA576wgWLMB20wvHYPh+Q5+DcWydxUT1wDth8a9xZnGjq5NTas3kybARZNaNCBZVDstaqeRkL0wZLIOsgpXHYKal2QXzObjGuoJ+VI/CvlwL9intbkTV16fM1VcAAAAASUVORK5CYII") !important;
   }

/* this is for enabled styles */
treechildren::-moz-tree-checkbox(checked) {
    list-style-image: url("data:image/x-png;base64,iVBORw0KGgoAAAANSUhEUgAAACsAAAAOCAYAAAC2POVFAAAAfklEQVR42u2T2w6AMAhD4f8/2stDE2WDFZIZjesjjO6som6H5CPS38OqivRcvTrrs2Afgz0PQOhgCL2bgXP+KuvjzUWzDWzzEgdylFzkw/SpZO2rABiZ9JJgYLP3DJNlEq/Us/ek12AmbGkN7Gf1dpRZA1uL5ko/2Nu1YGdpB5CSxdf8UHrwAAAAAElFTkSuQmCC") !important;
   }
}