Black painted cases and grounding

its fine. dont worry about it!

The screw holes, if they have paint, will be stripped of it when ya put the screws in

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.

Just a FYI, just because you don't get shocked doesn't mean it's not there. Also doesn't mean it's not enough to hurt it.

With that said don't worry about it. Just touch something that is metal to get rid of static that is on you.

I live in southern Arizona which has a very dry desert climate. In Winter the humidity typically drops to about 10% and sometimes drops as low as 3%. Static electricity causes all sorts of problems.

Hey, Johnny. Welcome back. Been on vacation?

I build on a sheet of grounded, antistatic foam. I don't worry about static.

jsc - I wound up getting engaged, buying a house, and going back to work. Personal time is limited.

     

I'm newish to the forum and haven't really got to know you, but congrats on the engagement and getting on the property ladder  .

There is no need for concern. If anything, paint may reduce a metal's ability to transfer heat/electricity. When working on the interior of the machine, you should ground yourself by a wrist strap (which most of us fore go) or by touching the chassis; preferably an un-painted surface to discharge any static current you may be carrying.
And its true, a current that is too small too detect or feel is plenty to destroy components.