Louis Vuitton has a personalization option
which includes initials/numbers mixture of 2 colours
and only in speedy pegase and keepall
as for hard sided suitcases options are a little broad.
unfortunately azur keepall isnt an option
so as I was looking around some junk I found
this daffy duck sticker and voile and personalized keepall
of course I still am waiting for the perfect sticker but this one suits just fine atm.