I also tried completely changing the theme to mycustomtheme on Template Admin page and also changed the default theme under Theme Settings to mycusomtheme, but when checking the <head> section it appears that all pages are still loading the cloud theme and not mycustomtheme.
I also tried completely changing the theme to mycustomtheme on Template Admin page and also changed the default theme under Theme Settings to mycusomtheme, but when checking the <head> section it appears that all pages are still loading the cloud theme and not mycustomtheme.