Many vendors list the footman loops by the size strap they are intended to work with. My first guess is that you are looking at 1-1/2". Some vendors also offer a black finish. There are loops available made of many materials including "white metal", steel, brass, plastic and stainless steel. Costs vary with material and I think there is a parallel to Chevrolet parts where if the part fits a Corvette as well as a garden variety Chevrolet - the price goes up. In this case Jeep footman loops seem more expensive than similar generic industrial supply ones. If you can find "close, but not perfect" match, consider replacing the originals as well as the missing ones and keeping the originals as samples to compare as the search continues for "perfect match".
Here's a Canadian source (located Barrie, no experience with them).
http://www.outdoorfabricscanada.com/...-_p_2042.html#
And from the US:
http://www.mcmaster.com/#footman's-loops/=1307cdd but won't sell to Canada or people using Canadian credit card.
https://www.beachwoodcanvas.com/order/productlist.cfm
http://www.debellajeepparts.com/mbgpwBody.htm
http://www.strapworks.com/ProductDet...Code=167MFL112
http://www.armysurpluswarehouse.com/...-dozen-od.html showing out of stock