Thanks for the response.
I've followed your instructions and was my printer is up to date. I did this using the smart app. That would make sense as I uninstalled and reinstalled from scratch as advised earlier in this thread. This time though, that process did not work.
Under Devices and Printers, I set as default and selected the printing preferences (I also looked at properties) but there isn't an option for printing in colour.
Any other suggestions or am I missing something obvious?