I wouldnt, they are actually nice looking. They wont look all that great a solid color. Time to change it out for something you like now. Maybe store them for a while, and if you dont want them in 6 months, donate them, or sell them.

what do you plan to use them for? can we see the space?

Agree with Cat--they aren't going to look good all one solid color. Either put them away for a while, donate them, try hanging then on the diagonal for a different, more interesting look.

Or try using something like Rub 'n Buff to change the colors.

https://www.amaco.com/t/mixed-media/metallic-finishes/rub-n-buff

Or, possibly paint them AND use Rub 'n Buff to highlight after painting.

That was my hesitation...one color would make it look boring...just square pieces of metal I like the idea of the Rub ’n Buff. I haven’t decided where I would put them up this time...multiple ideas. And I have already been storing them for over 6 months...it’s time to do something.

They are actually quite pretty. I would find a place where you can use them, just as they are.

Bought 2 of these; they were painted matte black when new. They are one piece; not 4 like yours. I love the matte black.

I would need to see where they are planned for .

I like the idea. if they're originally enamel, you could temporarily paint them with black poster paint-- then you could wash it off if you don't like it. test on something else to be sure it's actually washable.

this mockup is not super accurate (the raised parts show up as darker), but gives you an approximation of grey gloss vs. matte or satin black.

if you go matte, you could try chalk paint. sometimes it's easier than spray paint, depending on your skill level. less smelly and less messy too.

I think the black and gray pics look awesome, gilonfox & ILoveMod. I think the ebony Rubb n Buff might be a good combo with gray or black paint.

I think I have nothing to loose if I am just planning on getting rid of them. I might put more serious thought into where I would hang them. ;)

I've never used chalk paint. So someone else might be able to chime in. But I think it's perfect for stuff like this and then you can use some kind of wax to highlight the high parts of the design.

I would paint them an antique white and then paint over that with the soft charcoal. Then lightly sand the ridges to reveal the white and give a slightly distressed look. You could do the reverse as well, paint it black first, then top with white and sand some off to "distress"

I have sprayed some of my old dark bronze Tuscan decor white. My first attempt was horrifying. There was some kind of finish that became solvent and bled through making weird orangey spots. I resprayed them with bonding primer, then the top coats. Worked great that time. I decided not to distress them, so they are just solid white, but I’m glad they’ve got a second life. In this photo, the sign is purchased, the shelf is repainted. Yes, I have different things on top now 😉 I would suggest trying it. If you’re not loving them right now, it’s hard to hurt them. Try some DIY videos on you tube if you need a little boost.