For some time I borrowed @ChrisBeach’s snippet that was
And then I tried to use it as a theme component, you may find the result here:
What it does
It changes the appearance of the page when a private message is being read:
- the head banner color (with a gradient),
- the font color,
- the background color,
- the title color,
- by adding some text after reply.
All these changes are optional and can be toggled with their on/off setting.
The main «private messages» color can also be changed with a setting.
For tweaking precisely the different colors, one can edit the top part of the css file.