How do you know what size you need? Measure each bolt head and then go look for a socket of that size? If you can identify the size of the fastener by looking you should be able to identify the size of the socket by looking.
Having tools organized and sorted is very helpful and something most people do. Having the sizes visible doesn’t seem to be that helpful.
Sorry if I’m talking at you brother. Apologies and respect.
I keep that
chart I made in my toolbox with the std sizes for each national std. If you are working on a VW for example, you can guess with some certainty what sizes you will need. You don’t need to calibrate your eye to discern the difference between a 12mm bolt head and a 13. It’s 13mm on VW.
I know what you are saying tho. The markings on my impact sockets (back to the topic) aren’t THAT important. The black oxide finish is kinda fragile and it’s easy for me to find my 19mm, even if it wasn’t marked. It’s worn and covered in anti-seize. I personally struggle with 15mm, 16mm and 5/8”. If they weren’t marked I’d give myself a 30% chance of grabbing the right socket. This is made worse due to the fact that on some US vehicles, you may encounter either or both (15&16mm) on the same vehicle.
My advice remains: never buy laser etched tools, especially black oxide tools. Laser marking is the hallmark of a cheap tool and the markings rub off over time.

What I do is rub crayon into stampings, specifically on black oxide tools (doesn’t work well or help much on chrome) to help me grab the right tool. This lasts much longer than you might think. Crayon is wax and not much sticks to it. You can wipe greases and oils off it. And it’s easy to restore.