Save theme color across pages

scripts/copypopup.js

@@ -0,0 +1,24 @@
+let url = document.location.href;
+
+function copy(txt) {
+   let link = `${url}#${txt}`;
+   navigator.clipboard.writeText(link).then(() => {
+      console.log("Copied link!");
+   }, () => { console.log("Error copying link."); });
+   let alert = document.createElement("DIV");
+   alert.textContent = "Copied Link to Heading!";
+   alert.classList.add("tempAlert");
+   document.body.appendChild(alert);
+   setTimeout(() => {
+      alert.style.opacity = "1";
+      alert.style.bottom = ".5rem";
+   }, 200);
+   setTimeout(() => {
+      alert.style.opacity = "0";
+      alert.style.bottom = "-10rem";
+   }, 4200);
+   setTimeout(() => {
+      alert.remove();
+   }, 4400);
+
+}