@Dan_A personally the fix came through without me doing anything in
regards to un adding or re adding my lights, after a few days google
and/or tuya fixed whatever was broken
you aren't alone in this, there have been multiple reports on all
different platforms about this issue, google seem to be aware but
haven't given any more information on the subject
Aye, my fiet and signify based bulbs both still have color change
functions in google home, but all my tuya based lights are getting the
"unfortunately" message back from assistant