Thank you for the reply. I have added some custom CSS to change most things like cart page main colour, cart icon, view more buttons so that issue may now be resolved even though I’m still not sure what effect the options are having in the theme options section.
In terms of the site speed I have installed W3 cache as you recommended and have included log in details in the private section so that you can adjust the settings as you said. I didn’t want to change any of the settings until you looked at it in case I changed something you don’t recommend.
Thanks again
Michael