@namespace url(http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul);
              
/* this is for DISABLED FILTERS */
treechildren::-moz-tree-image(col-enabled, pattern-true, subscription-disabled-false, pattern-disabled-true),
treechildren::-moz-tree-image(col-enabled, subscription-true, subscription-special-false, subscription-disabled-true) {
     list-style-image: url("data:image/x-png;base64,iVBORw0KGgoAAAANSUhEUgAAACsAAAAOCAYAAAC2POVFAAAAiUlEQVR42u2UUQ6AMAhDx/0Pre5jkTRFVoOJmvXHZAX2HGy2HWofkf0D1qy1bo2vVDXIUWtBfA576wgWLMB20wvHYPh+Q5+DcWydxUT1wDth8a9xZnGjq5NTas3kybARZNaNCBZVDstaqeRkL0wZLIOsgpXHYKal2QXzObjGuoJ+VI/CvlwL9intbkTV16fM1VcAAAAASUVORK5CYII") !important;
   }

/* this is for ENABLED FILTERS */
treechildren::-moz-tree-image(col-enabled, pattern-true, subscription-disabled-false, pattern-disabled-false),
treechildren::-moz-tree-image(col-enabled, subscription-true, subscription-special-false, subscription-disabled-false) {
    list-style-image: url("data:image/x-png;base64,iVBORw0KGgoAAAANSUhEUgAAACsAAAAOCAYAAAC2POVFAAAAfklEQVR42u2T2w6AMAhD4f8/2stDE2WDFZIZjesjjO6som6H5CPS38OqivRcvTrrs2Afgz0PQOhgCL2bgXP+KuvjzUWzDWzzEgdylFzkw/SpZO2rABiZ9JJgYLP3DJNlEq/Us/ek12AmbGkN7Gf1dpRZA1uL5ko/2Nu1YGdpB5CSxdf8UHrwAAAAAElFTkSuQmCC") !important;
   }