feat: Custom accent color (#4897)

* types

* Working, but messy

* Add InputColor component

* types

* Show default theme values when not customized

* Support custom theme on team sign-in page

* Payload validation

* Custom theme on shared documents

* Improve theme validation

* Team -> Workspace in settings

app/index.tsx

@@ -100,7 +100,7 @@ window.addEventListener("load", async () => {
   });
 });
 
-if ("serviceWorker" in navigator) {
+if ("serviceWorker" in navigator && env.ENVIRONMENT !== "development") {
   window.addEventListener("load", () => {
     // see: https://bugs.chromium.org/p/chromium/issues/detail?id=1097616
     // In some rare (<0.1% of cases) this call can return `undefined`