v3.2.0
New release with less code in the bookmarklet and more efficient things.
Steps:
Simply download the file below
Go to bookmarks manager (ctrl+shift+o)
In the top right click the 3 dots
Select "Import Bookmarks"
Import the "custom-cursor-bm.html" file you just downloaded.
The bookmarklet will have an icon this way and is much safer.
In the bookmarks bar it creates a folder called [Imported], the bookmarklet will be in there.