Sorry folks, brain failure.
I've just rebuilt a machine with bookworm and THE LATEST NR.
(4.0.9)
When it installed it asked me some nice questions which I thought would be applied.
But the edit window is a bright white and burns me eyes. 
I've tried quickly but can't find how to make it dark.
I remember it asking and I picked a dark theme.
So I'm (again) missing an elephant.
Thanks in advance.
(from the settings.js file)
/** Customising the editor
* See https://nodered.org/docs/user-guide/runtime/configuration#editor-themes
* for all available options.
*/
editorTheme: {
/** The following property can be used to set a custom theme for the editor.
* See https://github.com/node-red-contrib-themes/theme-collection for
* a collection of themes to chose from.
*/
theme: "midnight-red",
/** To disable the 'Welcome to Node-RED' tour that is displayed the first
* time you access the editor for each release of Node-RED, set this to false
*/
//tours: false,
palette: {
/** The following property can be used to order the categories in the editor
* palette. If a node's category is not in the list, the category will get
* added to the end of the palette.
* If not set, the following default order is used:
*/
//categories: ['subflows', 'common', 'function', 'network', 'sequence', 'parser', 'storage'],
},
projects: {
/** To enable the Projects feature, set this value to true */
enabled: false,
workflow: {
/** Set the default projects workflow mode.
* - manual - you must manually commit changes
* - auto - changes are automatically committed
* This can be overridden per-user from the 'Git config'
* section of 'User Settings' within the editor
*/
mode: "manual"
}
},
Which - to me - doesn't look right as the docs say:
For example, this sets Node-RED to use the midnight-red theme.
editorTheme: {
theme: "midnight-red"
},
For details on the Node-RED's configuration file and its structure, please refer to the Node-RED
And being anal, there is a } after the theme's name.
There isn't in the code I posted.
But if I put one there, NR errors.
quick screen grab of the error:
And now it has made a liar of me.
Sorry folks.
