Any suggestions for what to use instead of tiles in a shower area? Am puting in a new shower tray and shower door. Have to do a complete retile of the area but would prefer to use something other than tiles as within a year or two the grout will be yellow from fake tan and hair dye and it will just look mangy again. I have heard that it is possible to buy sheet plastic but am also told that this discolours more than tile grout. Thanks.