Correct, neither LINE-X or Rhino are titanium. If they were you might as well add a couple of more digits to the price.
LINE-X can color match anything. At my shop, we buy Dupont Nason paint from Finishmasters (professional paint store). We give them the factory paint code if it's a factory color and they prepare the paint. If it's a custom color, we take them the truck or a sample of the color and they match it. BTW, Nason is an automotive paint that is durable and won't fade. It also better matches the typical metallic properties of the truck's paint than some other bedliner brands that just add pigment to a liner.
LINE-X has a nationwide lifetime warranty. Rhino's warranty is only with the dealer that sprayed it.