Ticking has become quite problematic as it isn't in tremendous demand.
To get something good, you probably need to contact a good quality upholstery house and see if they can help you source. Or try to find an upholstery supplier on line, I'd expect to find something of quality in the UK. Here in the states. I'd use the traditional stripes if they worked, and then make a neutral inner cover before placing into decorative casing. Very hard to find quality here.