@Panda You’ll need to do that with js. With some quick CSS changes, it looks like this
d619844f-fbfe-4cf1-a283-6b7364f6bf18-image.png
The colour choice is still really hard on the eye, but at least you can now read the text
How we can add background image to nodeBB?
@cagatay depends where you want to apply it
@phenomlab as for the sudonix for example all grey area.
@cagatay You’d target the body
tag and use the below line of CSS
background: url(/assets/customcss/backgrounds/default/default.png) no-repeat center center fixed;
Obviously, you need to change the path to suit where your image is being stored.
More info around the background
property can be found here