It's completely fine.
You can still be grounded through paint, and as Jack said their are always some areas that are not painted over if you're concern is that high.
Honestly (and just wondering here) how many of you have built a computer and got a static shock while doing it? How many of you have had a static shock inside your house in the last several months? I almost never get shocks (apart from my mums car which is a nightmare lol) and have yet to EVER get a shock building computers.