Initial Commit, minimal viable version. Buggy but does work 'most' of the time :-)

bolcom-3rdparty-filter/popup/filter.css

@@ -0,0 +1,62 @@
+body {
+  background-color: #2e2e2e;
+}
+
+h1 {
+    color: #fff;
+    font-size: 0.9em;
+    font-family: Verdana;
+}
+
+.switch {
+  position: relative;
+  display: inline-block;
+  width: 120px;
+  height: 34px;
+}
+
+/* Hide default HTML checkbox */
+.switch input {
+  opacity: 0;
+  width: 0;
+  height: 0;
+}
+
+/* The slider */
+.slider {
+  position: absolute;
+  cursor: pointer;
+  top: 0;
+  left: 0;
+  right: 0;
+  bottom: 0;
+  background-color: #1a1a1a;
+  -webkit-transition: .4s;
+  transition: .4s;
+}
+
+.slider:before {
+  position: absolute;
+  content: "";
+  height: 26px;
+  width: 54px;
+  left: 4px;
+  bottom: 4px;
+  background-color: #ccc;
+  -webkit-transition: .4s;
+  transition: .4s;
+}
+
+input:checked + .slider {
+  background-color: #2196F3;
+}
+
+input:focus + .slider {
+  box-shadow: 0 0 1px #2196F3;
+}
+
+input:checked + .slider:before {
+  -webkit-transform: translateX(54px);
+  -ms-transform: translateX(54px);
+  transform: translateX(54px);
+}