Invalid read syntax: "#"

```
(defun burly--frameset-restore (urlobj)
"Restore FRAMESET according to URLOBJ."
(pcase-let* ((`(,_ . ,query-string) (url-path-and-query urlobj))
(frameset (read (url-unhex-string query-string)))
(frameset-filter-alist (append burly-frameset-filter-alist frameset-filter-alist)))
;; Restore buffers. (Apparently `cl-loop''s in-ref doesn't work with
;; its destructuring, so we can't just `setf' on `window-state'.)
(setf (frameset-states frameset)
(cl-loop for (frame-parameters . window-state) in (frameset-states frameset)
collect (cons frame-parameters (burly--bufferize-window-state window-state))))
(frameset-restore frameset)))

```

I think read will have problem when we have like (cursor-color . "#dcdccc")