I am trying to change the standard, gradient login screen to one that I have choosen. I have searched and searched, but can only find info about changing the colors of the login screen.
I want to add a image, similar to what Owncloud uses for their "test" user-login.
Please help me, and I am not very good with code. But, I have managed to apply personal logos and such using the "themes" section. But, I can only trace the background to a .css file.
Yes, I have looked at that document, but I cannot seem to understand how and were I am supposed to attach the custom image that I want uploaded as an background. I am not interested in changing the color from blue to ex. red. But, to an .png or .jpg file.
Probably also somewhere at the code. Inspect the source code of the logo which you want to change and search through the code to find the relevant part of it might be a starting point.
It might be helpful to write what you have done so far to solve this issue.
But if the background image is not themeable like the logos or favicons (by copying it over as described in the linked docs above) create a new feature request at: