ACP - Change Primary Email Color

Im not sure what you mean here. You can type in the box that you click on. The same box that shows the color tool, you can type in

For me the text field where the color hex code is shown is locked. I can‘t change the text. 
I will check again when I‘m at home. 
edit:
I did fresh install and I wasn‘t able to edit the color in your wizard after installation, either. Only the color picker tool worked. 

Okay, I just checked again. It does work with Safari. It does not with Firefox (131.0.3). I have no addons installed which interfer. I have no idea...

I believe they have an open(?) bug report about the color field not working correctly. I reported it back in the first alpha versions.

I want to point out that it’s only this field where it’s not working. Everywhere else it does. 

Added another report for that