Need to wait for the new theme editor
or
you could try copying the new tungsten into the old user theme folder (make sure to change the extension to .sth), open it in the old theme editor and import the changes from "Mercsten" or "Tuncury", save and copy the new theme to the new user theme folder.I got this part wrong. Instead of copying Tungsten, the CbB resource files need to be in the Platinum program folder so the editor can pick up the new Mercury theme. Then editing Tungsten will show the new changed from Mercury which could be applied to the user themes. Any one trying this may want to save copies of the Platinum resource files so they can be restored easily. Personally, I have not tried this and would rather wait for the updated theme editor.