Web GUI Interface, customisation, accessibility etc

TrueNAS General
1

Slightly confused by little or no and coflicting information. Advice sought.

I have multiple servers. Administratively they are all accessed remotely from one client. I need a way to easily distinguish which is which when working on them, nomatter what screen I am on. They are all pretty similar in configuration apart from minor details.

This would appear to be something for themes. However there are two “light “ themes that at a glance look the same to me and a number of dark themes that again at a glance look the same to me. Especially when I am tired and my older eyes take a while to focus on text and/or colours. So themes doesn’t really work.

Having searched generally there appears to be little around other than a couple of threads last year on the forums that were seeking feature requests and links to TrueNAS documentation on a TRUENAS site that describes how to edit themes including background colours. Only trouble is that option no longer seems to exist. Why you’d remove something like that I can’t fathom.

So. Running 25.04 mainly and just upgraded one to 25.10.

Can I set my own background colours on these in any way at all? Either through the GUI or editting a config file somewhere. I’m guessing the themes are stored as some kind of text file??

If I can do other stuff great, but essentially I just want to set background colours so that no matter which admin screen I am on I can tell at a glance which of (up to 6) servers I am looking at.

Thanks.

2

No, there’s only a set of preconfigured themes.

3

There is a simple tricky way: there are some browser extension that can “inject” the css you want into the page, and keep track of the domain; I have used for example Stylebot, but pick the one you pref.
Then just overwrite the property you want, IMHO don’t go mess with classes but just overwrite the color var declared on top of the html tag on the page: for example

:root {
  --bg1: #3B71CA !important;
}

change the default background color, instead

--bg2: #3B71CA !important;

alter the side menu background color