There is a process whereby you can reline the interior of these cases. DonJer Products Corp. sells an undercoat adhesive in several colors that is applied to the inside of the case. While still wet IIRC you then sprinkle on the suede tex material in a matching color.
I relinned a wood pistol case that I found at a LGS by applying several layers of the stuff. I waited for the first coat to dry, added more adhesive and then sprinkled on more of the suede material. After several layers, the linning looked like felt.
I can't recall where I purchased the material but an internet search should turn up a source. The can of adhesive says that the company is from Winnebago, IL. (I may have gotten it from Rockler but that is just a WAG)
The outside of the case can be spray painted if I remember correctly. Buy a can of automotive spray paint that is a close match or if you have a friend in an auto body shop, they can probably mix you up a batch.
Obviously, the above is only important if you plan to restore the case. Otherwise, nevermind.....